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Peptide vials

L-Glutathione 1500mg

4.78 (358 reviews)
$120.00

Overview

L-Glutathione is a fundamental tripeptide (γ-L-glutamyl-L-cysteinylglycine) recognized as the “master antioxidant” in cellular biology. Essential for maintaining the delicate balance of redox homeostasis, it is a primary choice for laboratories looking to buy research peptides to investigate cellular protection and enzymatic pathways. At Scientipeptides, we provide HPLC-MS verified L-Glutathione with guaranteed 99%+ purity. Every order includes a full COA and is sent via discreet shipping to ensure your laboratory’s research remains secure and professional.

Specification

Purity: 99% HPLC

Potential research application

RESEARCH USE ONLY – REVIEW STUDIES: L-Glutathione is a fundamental tripeptide (γ-L-glutamyl-L-cysteinylglycine) recognized as the “master antioxidant” in cellular biology. Essential for maintaining the delicate balance of redox homeostasis, it is a primary choice for laboratories looking to buy research peptides to investigate cellular protection and enzymatic pathways.

Certificate of Analysis

Peptides validated with documented Certificate of analysis® for all products. See all COAs.

Third-party tested for Purity

Backed by industry-leading research and best practices. All products are fully HPLC tested for purity.

Same day delivery

Orders placed before 2pm EST (Mon–Fri) or 3pm Saturday ship the same day, using USPS for fastest delivery.

Additional information

Purity
99% HPLC

358 reviews for L-Glutathione 1500mg

Dr. Kimberly Baker July 16, 2026

L-Glutathione 1500mg restocks have been reliable even when other vendors were backordered on similar compounds. Reordering was quick and the last two shipments matched our prior lot specs without any label mix-ups.

Anonymous researcher July 16, 2026

We switched our L-Glutathione 1500mg sourcing to Scientipeptides and the insulated packaging with gel packs held temperature through transit. The cold-chain box arrived still cold and the vials looked clean on receipt. Glad we moved our lab orders here.

Dr. Magnus July 15, 2026

will order agian!!

Paul Sommer, PhD July 15, 2026

Storage and handling instructions for L-Glutathione 1500mg were clear and easy to follow which helped us set up our freezer log right away. Material arrived in good shape and behaved consistently with prior lots in the same bench assays. Support took about a day to reply when we had a documentation question which was slower than we hoped though they did resolve it fully. We are still satisfied overall and would reorder for our next study cycle.

Elena Villa July 15, 2026

L-Glutathione 1500mg restocks have been reliable even when other places were out. We have been able to keep assays moving without scrambling for alternate lots. Exactly what you want from a steady research supplier.

Olga Kuznetsov, PhD July 15, 2026

Our previous vendor had loose crimps more than once so we moved over here. Every stopper sat flush and the crimp ring felt uniform across the lot. Small detail but it matters when you handle vials daily in the lab.

Dr. Sol Miranda July 15, 2026

Labels on every vial were legible and held up fine through cold storage and routine handling on the bench.

Kyle Bishop, PhD July 15, 2026

Great L-Glutathione, slow restock!!

Dr. Fernanda July 15, 2026

COA came in the box, multi-vial bulk order was handled cleanly, and stability data was right there in the docs, very pleased.

Adrian T. July 14, 2026

Glad we switched.

Dr. Eva van Leeuwen July 14, 2026

I have already sent two colleagues here because every vial has been right on the labeled fill weight.

Dr. Long Truong July 14, 2026

Switched suppliers for better batch docs and filing was easy though the reconstitution notes were pretty minimal still glad we moved.

Dr. Sami Suleiman July 14, 2026

L-Glutathione tamper-evident seals intact, glad we switched.

Dr. Chelsea Dixon July 14, 2026

Tamper-evident seals were intact on every vial and batch-to-batch consistency has held across three reorders.. exactly what we expect from a research supplier.

Krzysztof K. July 14, 2026

Desiccant was dry and intact on arrival.. support helped us pull the specific lot COA we needed for our records w/ no hassle.

Dr. V.S. July 14, 2026

same clean results every reorder we place for the lab

Dr. Caleb Sanders July 13, 2026

We have been ordering L-Glutathione 1500mg for several rounds now and the reconstitution guidance included with the shipment saved our newer techs a step on prep. Each vial has had the full stated quantity with minimal loss at the bottom and the powder has been straightforward to bring into solution for our buffer work and the lot documentation has stayed consistent so our repeat assays look clean without extra troubleshooting.

Beatrice Moretti, PhD July 13, 2026

reorder was quick w/ no issues…

Sara A. July 13, 2026

Complete shipment, basic invoice formatting but fine.

Francesco V. July 12, 2026

Submitting a PO for L-Glutathione 1500mg through Scientipeptides was simpler than most vendors we work with. Their team confirmed the order quickly and the shipment matched the quote without back and forth. Documentation arrived with the package and lined up with our purchase records. We have already placed a second PO for the same SKU.

William Barnes, PhD July 12, 2026

Rec'd perfect.

Anonymous researcher July 11, 2026

L-Glutathione 1500mg has performed consistantly in our bench assays w/ clean, repeatable readouts.

Dr. Isabella Nunez July 11, 2026

Scientipeptides included clear reconstitution guidance with our L-Glutathione 1500mg, which made prep straightforward in the lab. The material dissolved cleanly with no cloudiness when we followed their notes. COA paperwork was complete and the lot on the vial matched the certificate. Packaging was secure and the cold-chain looked properly handled on arrival. We have already reordered the same sku for the next bench series.

Dr. Kody Davis July 11, 2026

Restocks of L-Glutathione 1500mg have been reliable here when other suppliers go out of stock. Our last two orders shipped quickly and the labeling and COA details matched what we expected from prior lots.

Dr. Florencia Herrera July 10, 2026

Rec'd perfect…

Dr. K.O. July 9, 2026

l-glutathione 1500mg.. exactly right.

Dr. Y. P. July 9, 2026

LC-MS identity confirmation on L-Glutathione 1500mg lined up with the sequence on the COA. Clean data, no surprises, and everything was documented the way we like for archive.

Dr. Eunji July 7, 2026

reliable supplier, glutathione arrived cold-packed

Dr. Junho July 7, 2026

Good, notes were brief.

Dr. Mei July 6, 2026

We reorder L-Glutathione 1500mg from Scientipeptides regularly. Padding in the shipper was secure so nothing shifted in transit, even with a few vials in the same carton. That kind of boring consistency is why we keep coming back!!

Dr. H. C. July 5, 2026

Exactly as described.

Dr. Grace July 5, 2026

good glutathione, thanks

Dr. Stefan Vogel July 4, 2026

L-Glutathione invoicing was itemized and clear so procurement signed off the same day we rec'd it

Dr. H. A. July 4, 2026

L-Glutathione 1500mg has given us clean blanks with no contamination carried into subsequent runs which keeps our data trustworthy. Tamper-evident seals were intact on every vial we opened. Packaging was organized and the COA was easy to match to the lot. We've run three separate preps without any handling surprises. Confident enough to keep this on our approved vendor list.

Anonymous researcher July 4, 2026

Tracking updates were accurate in transit from label print through delivery, which saved our team time chasing the box. Packaging was standard lab-grade and the order showed up when the portal said it would. COA was in the shipment and vials looked fine on receipt. No drama, just what we needed for a busy week.. would rec'd for anyone ordering routinely.

Dr. Valeria Rios July 4, 2026

L-Glutathione 1500mg third-party COA wide catalogue breadth…

Akira Kato, PhD July 3, 2026

Support was quick and knew their stuff on L-Glutathione 1500mg and they actually stock less common research peptides we chase, one vial cap was a little stiff to break but overall very satisfied.

Dr. Nathan July 1, 2026

Catalogue breadth covers our program needs, reported residual TFA was low, and in-house HPLC matched the stated purity on the COA.

Colton W. June 28, 2026

L-Glutathione 1500mg fit our program and the catalogue breadth made it easy to pull related compounds in one order. Bulk qty pricing worked for a larger study run. Tracking updates were sparse in transit but delivery was still quick.

Dr. Niklas June 27, 2026

Always reliable!!

Dr. A.C. June 27, 2026

L-Glutathione 1500mg COA lot number matched the vial lable exactly and the crimp plus stopper seal was solid w/ no looseness on any qty we opened.

Dr. Chinedu Nwosu June 26, 2026

We picked up a multi-vial qty for a bigger run and the bulk break actually helped our grant budget which was a nice surprise. Everything rec'd labeled cleanly and the cold pack was still frozen. Already planning the next reorder.

Dr. Valentina Bianchi June 26, 2026

The L-Glutathione 1500mg LC-MS identity confirmation lined up with the sequence on the COA exactly as expected. Reordering was quick and our second shipment matched the first without any discrepancies.

Dr. S.C. June 25, 2026

Much better supplier.

Dr. Jaden Green June 24, 2026

Blanks ran clean with no carryover though the label print was slightly faint and there was a bit more packaging than the order really needed we would still reorder!!

Dr. Dale Jackson June 23, 2026

L-Glutathione 1500mg: in-house HPLC matched COA purity, fill weight spot on.

Hassan Habib, PhD June 22, 2026

Tamper-evident seals on every vial were intact when the box landed on our bench.

Dr. Cristina Suarez June 22, 2026

Perfect stability and shelf-life data included.

Dr. Christopher Hughes June 21, 2026

L-Glutathione 1500mg complete shipment, broad catalogue.

Dr. Daisy Cavendish June 21, 2026

We moved our L-Glutathione 1500mg orders to Scientipeptides last quarter and shipping has been excellent every time. Padding in the box was secure and nothing shifted during transit, even on a longer ground route. Vials arrived upright with intact seals and the lyophilized cake looked uniform. COA documentation was included and easy to cross-reference with our internal batch records. For a peptide we use constantly in the lab, that kind of consistency is exactly what we want.

Dr. Valentina Fuentes June 19, 2026

Switched our L-Glutathione 1500mg sourcing here after headaches w/ another vendor. International shipping cleared smooth, dissolved clean in bac water for reference standard prep, and HPLC method development runs looked tight from the first lot.

Peyton Patterson, PhD June 18, 2026

L-Glutathione solid, delivery ran long.

Dr. Jing June 17, 2026

L-Glutathione purity checked out order complete!!

Dr. C. G. June 15, 2026

the glutathione vials look great on receipt and i would order again

Alfie Pennington, PhD June 15, 2026

Net peptide content versus gross mass was stated clearly on the spec sheet and institutional PO ordering was straightforward though support took about a day to reply and we are still happy with the material and would order again.

Anonymous researcher June 14, 2026

L-Glutathione 1500mg stays consistent lot to lot and reordering was quick/accurate.. no time wasted.

Meera Joshi, PhD June 13, 2026

Net peptide content vs gross mass was right there on the docs clear labeling like that saves time in the lab!!…

Dr. Cormac Byrne June 13, 2026

Storage and handling instructions on the insert were clear. Full stated quantity in the vial with minimal loss during prep. Support took about a day to reply on a paperwork question but the answer was correct.

Dr. D. S. June 13, 2026

Outstanding glutathione!

Jonas Schneider, PhD June 12, 2026

Emailed support with a COA question and they replied same day w/ a clear answer that matched our spec sheet so we didnt have to chase anyone down or re-open the ticket.

Dr. Marcel Zimmermann June 11, 2026

Fast doc support. Excellent.

Dr. Charlie Radcliffe June 11, 2026

We have been running L-Glutathione 1500mg from Scientipeptides for several months and it is a regular in our oxidative stress work. Reconstitution guidance was included in the shipment and clear enough that newer techs did not have to guess solvent or volume.. Each lot has looked uniform going into solution and we have not had to rework prep steps. Documentation is there when we audit batches and labeling has been consistent across orders. Shipping timing is predictable which matters when this sits on a standing reorder. For something we pull from the freezer weekly that repeatability is exactly what we want.

Dr. A.Z. June 10, 2026

Same L-Glutathione every reorder.. consistent…

Dr. Takumi Shimizu June 10, 2026

L-Glutathione 1500mg has been one of the cleaner reference materials we have brought in this year. We ran in-house HPLC on the first lot and the profile matched the stated purity on the COA without any unexpected peaks showing up. The lyophilized cake was intact and reconstituted to a clear solution in our standard buffer. Labels listed lot and fill clearly which helps when you are logging multiple vials into inventory at once and the second reorder looked identical on the chromatogram which is what we want for method development work.

Dr. Irina Kozlov June 10, 2026

Gel packs still cold, support took a day but solid.

Dr. T. H. June 9, 2026

COA lot numbers have matched the vial labels exactly on every shipment we have logged. That kind of traceability saves time when procurement asks for paperwork. Scientipeptides also carries enough breadth in the catalogue that we can bundle peptides for the same research program instead of splitting vendors. Documentation has been consistent and easy to attach to our internal files. Already pointed a few lab mates here.

Dr. Yuri June 8, 2026

Rec'd our institutional PO without any back-and-forth and checkout was straightforward.

Dr. Julien Barbier June 8, 2026

Perfect L-Glutathione…

Dr. Marie June 8, 2026

Our LC-MS identity check on L-Glutathione 1500mg lined up cleanly with the expected sequence and we had no ambiguity on the lot we received. The glass vial quality was noticeably better than what we have gotten elsewhere, thick walls and a clean crimp that seated well under the stopper. COA documentation was straightforward to match against the label. I have already pointed two other groups in the lab toward Scientipeptides for the same material. Easy recommendation from our side.

Dr. Olga Petrov June 8, 2026

Perfect, thanks!

Dr. Andrea Mariani June 7, 2026

Our multi-vial L-Glutathione 1500mg order was packed and labeled cleanly with no mix-ups between lots. Independent third-party lab testing was available on request and the COA package was complete. Exactly the level of detail we want for peptide sourcing.

Dr. Carolin Koenig June 7, 2026

Shipment arrived on schedule. Labels are legible under normal bench lighting and have not smeared after gloved handling. Lot numbers read cleanly for logbooks. Outer carton was plain and professional. Receiving was uneventful. Will reorder.

Dr. Lea Fournier June 6, 2026

L-Glutathione 1500mg from Scientipeptides has been reliable order after order and the COA paperwork is always in the box when we need it for the log. Packaging and delivery have stayed consistent too which matters when you are running assays on a tight schedule…

Dr. Caio June 3, 2026

Accurate fill/mass per vial, solid crimp & stopper seal, no damage on arrival.

Dr. Gustavo Correia May 31, 2026

Perfect thanks

Katarzyna Kaczmarek, PhD May 31, 2026

Very good…

Dr. Klaus Schneider May 31, 2026

L-Glutathione 1500mg showed up with a solid crimp and stopper seal on every vial we opened. We ran in-house HPLC against the COA and the purity lined up with what was stated on the sheet. Storage and handling instructions on the label were clear enough that our techs had no questions. Packaging was clean and the material handled predictably on the bench. No issues across the lot we pulled for this run.

Omar Saleh, PhD May 31, 2026

Bulk pricing worked well for a larger study we had queued up. Documentation was complete and the order process was straightforward from quote to delivery.

Javier R. May 29, 2026

Independent third-party lab testing was available for the lot we ordered, which gave us extra confidence before running validation. A minor shipping issue on arrival was resolved smoothly by support with a quick replacement label pack. Reconstitution went clean with no cloudiness and the solution stayed clear through handling. Documentation was organized and the COA matched the vial lot number without any back-and-forth.

Dr. Hai Pham May 28, 2026

L-Glutathione 1500mg produced clean blanks with no contamination carried into subsequent HPLC runs. Order turnaround was fast and the vials arrived well packed with intact seals.

Yen Ngo May 28, 2026

Glad we switched net peptide vs gross mass stated clearly plus shelf-life/stability data on the insert rec'd w/ the shipment.

Dr. E. C. May 26, 2026

l-glutathione 1500mg shipping snag fixed fast reorder accurate

Anonymous researcher May 26, 2026

International shipping was handled smoothly, tracking updated through customs, cold chain packaging arrived intact, and we moved the vials straight into storage without any receiving drama.

Dr. T. V. May 26, 2026

Support helped us track down a specific lot COA for L-Glutathione 1500mg without a long back-and-forth, which saved our documentation audit. Material arrived as ordered and the paperwork matched the vial label on the first check.

Dr. Sneha May 26, 2026

L-Glutathione 1500mg restocks have been reliable when stock runs low, and every vial arrived w/ a solid crimp and stopper seal…

Dr. Jan Krueger May 26, 2026

L-Glutathione 1500mg specs on the site matched what showed up in the vial. Scientipeptides has been a reliable lab supplier for our restocks. Will keep ordering!!

Dr. Natalia Garcia May 25, 2026

COA lot matched the vial label exactly, net vs gross mass clear and they actually stock less common peptides we hunt for.

Dr. Jisoo Seo May 25, 2026

L-Glutathione 1500mg arrived with endotoxin and sterility figures documented on the COA which our QA team could file without extra requests. Stability and shelf-life data was included in the packet so storage planning was straightforward. Vial seals looked untouched and labels were crisp. We've already worked it into two bench protocols. Good experience overall for a compound we rely on regularly.

Dr. Rafael Araujo May 25, 2026

This has been an excellent reference standard for developing our HPLC method and the peak shape has stayed reproducible across lots.

Anonymous researcher May 23, 2026

We moved off our old vendor after too many messy chromatograms and this glutathione lot ran clean on in-house HPLC w/ no unexpected side peaks. Reconstitution was straightforward w/ our usual buffer and the vials landed sealed tight inside the insulated pack. COA matched what we measured and it has stayed consistent through two reorder cycles which is the temp check we needed before committing to a larger qty. I already pointed the neighboring lab here because the documentation alone saved us a week of back-and-forth.

Takumi Nakamura, PhD May 22, 2026

Lyoph cake intact w/ no clumping qty looked right vial to vial and batch consistency has held across three reorders so yeah I'd rec'd.

Cody Jones, PhD May 22, 2026

Exactly as described..

Dr. Rodrigo Moreira May 22, 2026

We switched after getting vials with crushed desiccant from another source and the difference was obvious right away. The desiccant packet was intact and still active when we opened the box. Vials sat secure in the foam and nothing rattled around during shipping. Labels were legible and matched the paperwork without any lot number hunting. For a peptide we store carefully, that kind of attention to detail is reassuring. Happy we made the change.

Hailey Sullivan, PhD May 21, 2026

fill weight on the L-Glutathione 1500mg vials has been right on target every time. Blanks stay clean with no contamination carried into our runs which keeps QC straightforward.

Dr. Aniket Chopra May 19, 2026

Desiccant intact, labels readable, no issues!!

Dr. Dev Chopra May 19, 2026

L-Glutathione 1500mg dissolved clean no cloudiness, glass vials feel high quality, endotoxin and sterility figures documented on the COA.

Dr. Marcel May 18, 2026

We picked up L-Glutathione 1500mg for method development and it has worked well as a reference standard in our validation runs. The price point made sense for a constrained research budget without forcing us into a cheaper vendor with spotty paperwork. Purity on the certificate matched what we saw internally and the peptide identity was straightforward to confirm. Labeling was clear enough that new students could handle it without extra coaching. I would buy this again for the same protocol work.

Dr. Linnea Dahl May 17, 2026

Support fixed a shipping snag smoothly, COA was in the box, and they carry less common research peptides we struggle to source elsewhere, though there was a bit more packaging than the order really needed and I'd still recommend them.

Anonymous researcher May 16, 2026

L-Glutathione 1500mg has given us clean blanks with no contamination carried into runs, which matters when you are stacking sensitive assays. Cold-chain packaging arrived still cold and the vials were seated securely in the box. Labels were clear and the COA lot tied back to what we received. Reconstituted clean in the hood and performed consistently across repeats. Really appreciate the attention on shipping and documentation.

Dr. Steven Carroll May 15, 2026

Perfect, thanks!

Dr. J. C. May 14, 2026

Mass per vial tracked with what was stated on the label within our balance tolerance. Padding was snug so nothing shifted in transit and the presentation matched the rest of the order.

Anonymous researcher May 14, 2026

Consistent quality across lots makes this our preferred vendor for reference materials. HPLC purity was above the stated threshold.

Dr. Wei Yao May 14, 2026

we rec'd L-Glutathione 1500mg w/ full shelf-life and stability documentation our previous supplier never bothered to include. Makes temp logging and qty planning in the freezer much easier for the whole bench.

Dr. Kaito Mori May 12, 2026

The L-Glutathione 1500mg batch documentation was thorough and easy to file in our binder system. Lot details and temp storage notes were clear w/ no gaps.

Amanda Barbosa, PhD May 11, 2026

We moved our L-Glutathione 1500mg sourcing here after inconsistent fills elsewhere. The vial held the full stated quantity with minimal loss on reconstitution. Net peptide content versus gross mass was spelled out clearly on the label and COA. Filing batch records took minutes instead of chasing missing pages. Happy we switched.

Dr. K. M. May 11, 2026

Great switch.

Dr. H. K. May 11, 2026

Their catalogue breadth is broader than most vendors we have used, which makes planning a multi-compound research program much easier. We were able to source everything for our antioxidant bench work from one supplier…

Dr. Eunji Shin May 10, 2026

Bulk pricing worked for our larger study and the cold-chain packaging was still cold when it hit the bench. Checkout on the site was a little clunky and tracking updates were sparse in transit, but we'd reorder based on the material quality alone.

Dr. Amanda Barbosa May 9, 2026

L-Glutathione 1500mg has stayed consistent batch to batch across reorders, support was responsive and knew the COA details when we asked about a lot…

Dr. Padraig Flanagan May 8, 2026

Switched our L-Glutathione 1500mg source here and the chromatogram looked clean with no unexpected side peaks.. Invoice formatting was very basic but the material and docs were solid, would rec'd.

Dr. Divya Subramanian May 7, 2026

Exactly right!!

Dr. Yuri Sokolov May 6, 2026

L-Glutathione 1500mg rec'd with tamper-evident seals intact and I'd send colleagues here without hesitation.

Dr. Yuna Kato May 2, 2026

The L-Glutathione 1500mg from Scientipeptides showed up exactly how we like to see research material arrive. Every vial had tamper-evident seals fully intact with no signs of handling in transit.. We pulled COAs for the lot and the documentation lined up cleanly with what we expect for bench use. Reconstitution went smooth and the material handled predictably in our workflow. Honestly this is the kind of supplier consistency that keeps a lab from scrambling between orders. Already planning the next restock…

Dr. Viktor Makarov April 30, 2026

We moved our L-Glutathione 1500mg orders to Scientipeptides after inconsistent cold-chain elsewhere. Tracking updates were accurate in transit and the insulated box w/ gel packs was still cold when it hit our dock. Labels matched the COA and nothing looked tossed around inside. For something we reorder regularly that peace of mind on shipping matters a lot.

Dr. Mikhail Egorov April 30, 2026

We switched after too many COA and label mismatches at our old vendor. Here the certificate lot number matched the vial label exactly, which keeps our receiving log clean. Very glad we moved!!

Jihoon J. April 30, 2026

Always in stock.

Anonymous researcher April 28, 2026

international shipping on L-Glutathione 1500mg was handled smoothly, customs paperwork was in order and delivery landed without issues. Exactly what we needed for an overseas collab order.. very straightfoward.

Seoyeon S. April 28, 2026

L-Glutathione 1500mg showed accurate fill weight and the stated mass on the label matched what we weighed in.

Dr. Carolin Schuster April 26, 2026

perfect vial, thanks!!

Dr. Emma Fowler April 26, 2026

Rec'd fast, perfect.

Anonymous researcher April 24, 2026

Solid reference standard for method development and the catalogue breadth keeps our peptide list covered.. desiccant pack shifted a little in transit but everything else was fine and we would order again.

Dr. Melissa Payne April 23, 2026

Turnaround was faster than quoted for our last restock. Vials arrived sealed and we ran in-house HPLC within the week. The main peak aligned with the stated purity on the COA within our normal method tolerance. Documentation was clear enough to file without extra formatting. For routine redox assay prep that kind of verified consistency saves us repeat verification steps.

Dr. R.L. April 23, 2026

clean glutathione runs, invoicng clear

Dr. L. C. April 23, 2026

Storage and handling instructions for L-Glutathione 1500mg were straightforward and matched our cold-room workflow independent third-party lab testing was available and the documentation lined up with our SOPs.

Anonymous researcher April 23, 2026

Every line item on the L-Glutathione 1500mg order arrived accounted for, COA included and nothing missing from the shipment. Vials were individually labeled with lot numbers that matched the documentation packet. Seals were intact and the cold-chain packaging was still cold at receipt. We logged it into inventory the same day and moved straight into method validation. Exactly the kind of complete delivery our lab expects.

Anonymous researcher April 23, 2026

Product specs on the site matched what showed up and tracking updates stayed accurate in transit, glad we moved over.

Dr. M.R. April 22, 2026

L-Glutathione net vs gross mass clear support knew the specs

Dr. Meera Bhat April 21, 2026

L-Glutathione 1500mg arrived with the COA lot number matching the vial label exactly which we always verify on intake. Padding kept everything from shifting in the box and the seals looked untouched.

Dr. Leticia Cardoso April 19, 2026

Batch documentation was thorough and easy to file for our lab archive.

Dr. Matteo Mariani April 17, 2026

Full stated qty in the vial with minimal lyophilized loss and the storage handling instructions on the insert were clear.. no ambiguity on temp or light exposure.

Dr. I. M. April 17, 2026

Exactly as labeled.

Dr. Delphine Roux April 16, 2026

Verry good L-Glutathione…

Dr. Amara Diallo April 15, 2026

We validated identity by LC-MS in-house and it matched the provided data. A dependable source for our screening work.

Dr. Thijs van Leeuwen April 14, 2026

l-glutathione perfect.

Dr. Sierra April 11, 2026

L-Glutathione 1500mg arrived with desiccant intact and our institutional PO order went through without hassle. Invoice layout was pretty basic on our end but procurement still cleared it fine and we are happy with the shipment.

Anonymous researcher April 11, 2026

Great L-Glutathione 1500mg.. perfect!!

Magdalena K. April 11, 2026

Dissolved cleanly in bacteriostatic water with no cloudiness or particulate, which made prep straightforward. We have been using it as a reference standard while developing our in-house method and the peaks have been stable run to run.

Dr. Arthur Whitmore April 9, 2026

l-glutathione re-order w/ correct qty, rec'd fast.

Anonymous researcher April 8, 2026

switched from another supplier and glad we did.. reconstitution gave a clean dissolve with no cloudiness and the storage and handling notes on the label were clear enough that our team prepped it the same way every time.

Dr. Mariana Ferreyra April 8, 2026

fine but notes sparse…

Dr. Khanh Pham April 8, 2026

hard to source L-Glutathione 1500mg elsewhere and the fill matched the labeled mass. Dissolved clean in bacteriostatic water w/ no particulate. Label print was slightly faint but still readable and we would reorder.

Dr. E.F. April 7, 2026

Weight check matched the stated quantity in the vial with minimal loss on the fill. Packaging was straightforward and everything arrived complete for our bench prep.

Julian Vargas, PhD April 7, 2026

We have reordered this compound three times now and batch-to-batch consistency has been steady across all of them. Our in-house HPLC lined up with the stated purity on the COA each time which saved us back-and-forth with QA. Stability and shelf-life data were included in the documentation pack so we did not have to request it separately. Vials arrived sealed and the lyophilized material looked uniform vial to vial. For ongoing assay work that kind of predictability makes procurement straightforward.

Dr. N.M. April 6, 2026

Consistent in our bench assays and the reported residual TFA levels look reasonable on the COA. Checkout on the site was a little clunky but the shipment arrived as expected and we would order again.

Dr. Alexandra April 6, 2026

L-Glutathione 1500mg arrived in cold-chain packaging that was still cold on our bench. Ran blanks before and after and saw no contamination carried into the runs.

Adaeze C. April 5, 2026

We rec'd our L-Glutathione 1500mg with a clean itemized invoice procurement actually approved on the first pass. Restock timing on this SKU can run a little slow but the material and paperwork were worth the wait.

Dr. Ying Xu April 4, 2026

We reorder L-Glutathione 1500mg regularly and the endotoxin and sterility figures are always documented on the COA. Tracking updates stayed accurate in transit on our last few shipments as well. Reliable vendor for our ongoing bench work.

Dr. Viktor April 3, 2026

Our blank runs stayed clean with no contamination carried over and that's why we keep restocking.

Dr. Sanne Jansen April 2, 2026

L-Glutathione 1500mg went into bacteriostatic water clean w/ no particulate.. consistant reliable supplier for our bench prep.

Dr. Harry Halliwell March 30, 2026

L-Glutathione 1500mg came back clean on our spot check, low residual TFA on the COA and Scientipeptides has been steady for repeat orders.

Jonas Frank, PhD March 30, 2026

L-Glutathione 1500mg gave a clean chromatogram w/ no unexpected side peaks and the labels were legible enough for our freezer log. Invoice formatting was very basic and the label print was slightly faint but I would reorder for the analytical quality.

Dr. Jasmine Young March 30, 2026

COA included.. perfect.

Dr. Elena Colombo March 27, 2026

Support helped us track down a specific lot COA quickly when accounting asked for it. Performance in bench assays has been steady lot to lot with clean baselines. Our bulk multi-vial order was packed well and nothing was shorted. Documentation matched labels and filing was painless. Will keep using them for standing peptide orders.

Dr. Yara Aoun March 25, 2026

Our lab started ordering L-Glutathione 1500mg through Scientipeptides and the institutional PO process was straightforward from quote to payment. The itemized invoice had every line procurement needed which is harder to find than it should be. Tracking updates were pretty sparse while the package was in transit but it arrived on time and matched the order exactly so we are happy to keep using them and have already pointed a couple colleagues here.

Dr. Louis March 24, 2026

The storage and handling instructions in the box were clear enough that our newer techs could follow them without asking around. Everything was spelled out for temp and light exposure. Appreciate vendors that don't make you hunt for basic guidance.

Dr. Bryan Johnson March 22, 2026

We switched vendors after too many spec mismatches and the listed MW fill weight and purity details on the site matched what showed up in the box w/ the COA. Receiving and bench prep have been smoother since the change and we are not looking back.

Dr. Sota March 20, 2026

The fill matched the listed amount and we saw minimal loss during reconstitution in the lab. Tracking updates were a little sparse in transit but the shipment arrived intact and on time!!

Dr. C. F. March 18, 2026

Very good.

Dr. C. L. March 18, 2026

L-Glutathione 1500mg arrived w/ tamper-evident seals intact desiccant still dry and international shipping cleared customs without drama. Exactly what we needed for the bench.

Dr. Thomas Whitfield March 17, 2026

Purity was exactly as stated on the COA. We ran our own HPLC and the trace matched the certificate with no unexpected peaks. Reconstituted cleanly in buffer for our in vitro work.

Dr. Tariq Bishara March 17, 2026

L-Glutathione 1500mg arrived with clear stability and shelf-life data that made freezer storage planning straightforward for our team.

Dr. C. B. March 16, 2026

L-Glutathione HPLC matched COA.

Dr. Sakura Inoue March 16, 2026

Exactly as described.

Dr. Imogen Pembroke March 15, 2026

Verry good L-Glutathione.

Mei Mori, PhD March 15, 2026

Support helped us track down a specific lot COA within a day and made filing our batch records painless.

Dr. Nikolai Sokolov March 15, 2026

Third-party lab testing was available on the COA which gave us extra confidence before we ran MS…!!

Dr. Karin Lindgren March 14, 2026

switched our L-Glutathione 1500mg sourcing here and support helped us track down a specific lot COA same day without any runaround.

Dr. Sho Kato March 13, 2026

We've been ordering L-Glutathione 1500mg from Scientipeptides for several quarters and it keeps clearing procurement without extra follow-up. the invoice arrived clear and itemized line by line so accounting could post it same day. COA paperwork matches prior lots and our HPLC runs look clean on receipt. Reconstitution in the lab has been predictable and the vials are labeled consistently. Purity has held steady and we plan to keep this on our standing order list.

Dr. Nils March 12, 2026

L-Glutathione 1500mg has been batch-to-batch consistent across several reorders and our bench data has stayed stable. COA lot info matched the vials and packaging was fine on arrival. Tracking updates were sparse in transit so we were guessing delivery timing a bit. Reconstitution notes on the product page were pretty minimal and we had to lean on prior lab SOPs. Still satisfied overall and would order again for the program.

Dr. Radhika Bhatt March 9, 2026

Solid peptide. Fast.

Dr. Wade March 8, 2026

Itemized invoicing makes procurement painless and whenever I have had technical or documentation questions someone gets back quickly with useful answers. Third reorder and still no surprises!!

Dr. Niklas Lehmann March 8, 2026

weighed out to the full stated 1500mg qty in the vial with minimal loss which is the kind of detail that matters when you are running tight assays.

Dr. Andrei Sokolov March 8, 2026

L-Glutathione 1500mg cold-chain intact on arrival.

Dr. Alexis March 7, 2026

Exactly as described..

Dr. Sandrine Perrin March 6, 2026

L-Glutathione 1500mg bulk pricing worked out well for our larger study and the whole order from quote to delivery was smooth enough that we are already planning the next qty.

Dr. Marco Rizzo March 5, 2026

Scientipeptides keeps harder-to-source research peptides like L-Glutathione 1500mg in stock when other places go quiet.. we rec'd this lot without a long wait and the labeling was correct on arrival.

Dr. Sara March 5, 2026

L-Glutathione 1500mg included clear shelf-life data on the COA which helped our filing though the desiccant pack shifted a little in the box still happy w/ the lot.

Dr. Stefano Ferrara March 3, 2026

Exactly as described.

Anonymous researcher March 3, 2026

Vial crimp and stopper seals were solid across the set we received. Nothing loose, no compromised closures. Labels were readable and the material handled normally on the bench. Reconstitution notes in the insert were pretty minimal, though we worked it out from our usual protocol. Still satisfied with the order and would reorder.

Dr. Hassan Aoun February 28, 2026

We switched suppliers last quarter and the certificate of analysis came in the shipment, which our QA team appreciated. Batch documentation was thorough and easy to file without extra follow-up. Glad we made the move.

Dr. Mackenzie White February 24, 2026

The COA for our L-Glutathione 1500mg order listed molecular weight and sequence clearly which made cross-checking against our internal references simple. HPLC purity matched the documented values on the sheet. We file these with every lot for audit purposes and having both data points on one document saves a step. No discrepancies across the two batches we have tested so far.

Dr. Kaito Kobayashi February 23, 2026

our team scaled up a larger study and the bulk pricing on L-Glutathione 1500mg made sense for the qty we needed. Each vial matched the stated fill when we weighed them and the material handled cleanly during prep. Documentation has been straightforward and our repeat runs look consistent across lots. Already planning the next restock!!

Dr. Nabil February 22, 2026

Consistent lot to lot…

Emily Andrews February 18, 2026

L-Glutathione.. sturdy glass vials easy PO… very pleased

Dr. Seoyeon Oh February 17, 2026

L-Glutathione 1500mg came with a COA that referenced independent third-party lab testing and we pulled the full report without chasing anyone down. Purity and identity data matched what we needed for our qualification folder and the vial labels pointed to the correct lot number. Reconstitution in our buffer was straightforward and the solution stayed clear through prep. We have been using it as a reference in method development and results have been consistent across two separate shipments and for a compound we document carefully that level of traceability is exactly what we look for.

Dr. Kerem Erdogan February 17, 2026

L-Glutathione 1500mg came with a COA lot number that matched the vial label exactly, which made filing straightforward. Bulk pricing for our larger study was fair and the order shipped without any hold-ups.

Anonymous researcher February 16, 2026

Shipping was quick and the vials were properly labelled with lot and storage information. Everything checked out against our incoming QC.

Dr. Omid Mohammadi February 16, 2026

We switched to Scientipeptides for L-Glutathione 1500mg after inconsistent specs elsewhere. The product details on the site matched what arrived and the vial label was easy to verify against our order.

Dr. Chidi Adegoke February 13, 2026

Second order went through in minutes and every line item matched what we got last time. Same lot format on the labels too which makes our inventory log painless. Easy to recommend for labs that reorder regularly.

Dr. Layla Nazari February 13, 2026

exactly what we needed.

Camille M. February 10, 2026

Reorder fast checkout kinda clunky though.

Dr. H.Y. February 6, 2026

Thin notes, still solid.

Wenjie Yao February 5, 2026

Filled to the labeled 1500mg with minimal loss from the vial though the reconstitution notes were pretty minimal, still happy with the material overall.

Dr. Emil Strand February 4, 2026

COA had molecular weight and sequence details spelled out clearly which saved time cross-checking against our internal specs. Site listing matched what showed up in the vial every time we've ordered. They also carry less common research peptides we couldn't get elsewhere without long lead times. Bench prep has been straightforward w/ solid documentation each lot. Already planning our next qty restock.

Dr. T. N. February 3, 2026

Great L-Glutathione clunky checkout but worth it!!

Dr. Dahye January 31, 2026

Rec'd a clean chromatogram w/ no unexpected side peaks on our QC check.

Dr. Qing January 30, 2026

We moved our glutathione sourcing here last quarter and the difference shows up in everyday bench work. Desiccant was included and intact in every vial cap and our solvent blanks stayed clean with no carryover into the runs. Outer box was plain and unbranded which our receiving dock appreciates. Compared to our previous vendor the documentation and packaging feel more dialed in. Glad we switched.

Dr. Farah Ibrahim January 29, 2026

The L-Glutathione 1500mg reconstituted cleanly with no cloudiness and the solution stayed clear through our prep steps. The desiccant pack shifted around a little inside the box but the vial itself was fine… we'll order again.

Daisy Pemberton January 28, 2026

Batch documentation was thorough and easy to file with our internal QA records.

Dr. Saoirse Callaghan January 26, 2026

Padding held firm, nothing shifted!! checkout was a little clunky though…

Dr. Matthew Ellison January 25, 2026

Love this L-Glutathione!

Dr. G.D. January 22, 2026

I have been recommending L-Glutathione 1500mg to colleagues on other benches. Every shipment arrived with a tight vial crimp and stopper seal that held through handling. The lyophilised material looked clean under inspection. Documentation was straightforward to archive. For routine antioxidant work in the lab this has been a dependable pick.

Dr. A. S. January 21, 2026

Perfect L-Glutathione, thanks!

Dr. V.L. January 20, 2026

Reliable restocks fast delivery desiccant shifted a little!!

Dr. Nadine Brandt January 19, 2026

For day-to-day lab ordering we have not had surprises. Shipments show up when expected and the paperwork has been consistent enough that procurement does not push back. That kind of overall reliability is what we want from a peptide vendor.

Dr. Wei Chen January 18, 2026

Lyophilised powder was clean and white, and reconstituted without residue. Suitable for our downstream biochemical characterisation.

Anonymous researcher January 18, 2026

Hard to find certain research compounds elsewhere and they actually stock what our lab needs without long backorders. That availability took a lot of stress out of planning runs. Will keep sourcing specialty items here.

Dr. Suresh January 16, 2026

L-Glutathione 1500mg COA lot number matched the vial label exactly and invoicing was clear and itemized for procurement.. really appreciate that level of detail.

Dr. P. L. January 16, 2026

clean blanks on our runs, no contamination carried in from the L-Glutathione 1500mg vials. Material behaved consistently bench-side and we are keeping this on the reorder list.

Dr. J. R. January 15, 2026

Exactly as described.

Dr. Lincoln Howard January 14, 2026

L-Glutathione 1500mg: third-party COA, clear temp storage.

Bruno Nascimento January 14, 2026

great glutathione here

Dr. H.S. January 13, 2026

Reconstitution went clean with no cloudiness and our bulk multi-vial order was packed uniformly with nothing loose in the box. Insulated shipping kept everything stable in transit which matters when you are stocking up…

Dr. Thijs Mulder January 13, 2026

L-Glutathione 1500mg shipped in plain outer packaging nothing flashy. Stability and shelf-life data were included so we filed it with the batch. In and out fast, no issues.

Anonymous researcher January 12, 2026

Our latest shipment arrived in insulated packaging with gel packs that still felt cold when we opened the box. Each vial sat secure in the foam tray and nothing had shifted during transit. We logged receiving temp on the bench sheet and it was well within what our protocol calls for on peptide deliveries. Labels were legible and the outer carton had no crush damage. For something we reorder regularly that kind of cold-chain handling is exactly what we want from a supplier.

Dr. Elena January 10, 2026

Desiccant included and fully intact.

Dr. S. L. January 10, 2026

The glass vial quality is high, thick walls and a clean finish that handles repeated draws w/o chips and I have rec'd this line to two other groups already.

Dr. Bjorn Bergstrom January 9, 2026

Every lot has given us a clean chromatogram with no unexpected side peaks. We trust it for our calibration curves…

Dr. Mahsa Ghasemi January 9, 2026

fast turnaround, COA lot matched, tracking sparse though

Dr. M. J. January 9, 2026

great glutathione always perfect

Dr. Niamh January 6, 2026

Delivery was faster than the quoted window and everything arrived well packed for bench storage. The reconstitution notes were pretty minimal compared to what we usually see from peptide vendors, but the vials matched prior lots and we would order again.

Hailey Warren, PhD January 5, 2026

Labels on L-Glutathione 1500mg were legible and durable through cold storage and batch-to-batch consistency across reorders has held up in our lab, very satisfied.

Kathryn Franklin, PhD January 4, 2026

The fill on each L-Glutathione 1500mg vial has been right on target when we check mass and it has worked well as a reference standard for our method development runs. Really happy with how cleanly it slots into our validation workflow…

Dr. Neda Ghasemi January 2, 2026

the L-Glutathione 1500mg vial came in at the stated fill with basically no lyoph loss after reconstitution.

Anonymous researcher January 1, 2026

L-Glutathione 1500mg from this lot had an intact lyophilised cake with no clumping at the bottom of the vial. Reconstitution was clean and we did not see particulate after a brief spin. In bench assays it has performed consistently with prior batches, which keeps our controls stable week to week. The COA lot matched the label and storage guidance was straightforward. Outer packaging was professional without flashy branding. This is the level of detail we want for routine lab use.

Dr. Sander de Vries January 1, 2026

Very good.

Dr. Ian December 31, 2025

Cold-chain packaging arrived still cold and tracking updates stayed accurate through every scan so we could plan receiving around the delivery window without guessing!!

Dr. Giulia December 29, 2025

we keep reordering here because the catalogue breadth covers most of what our research program needs in one place.. one vial cap was a little stiff to break but the material and docs were spot on as usual.

Dr. E. B. December 25, 2025

l-glutathione 1500mg came w/ thorough batch docs reconstitution notes and shelf-life data on the insert though the desiccant pack had shifted a bit in transit still satisfied and would reorder.

Dr. Amira Khalil December 25, 2025

L-Glutathione 1500mg worked great as a ref standard for method dev, net peptide vs gross was clear on the sheet and our HPLC run showed a clean chromatogram w/ no stray peaks.

Dr. Sungmin Choi December 25, 2025

Itemized invoicing made procurement painless, COA listed low residual TFA/solvent levels and the material has worked well as a reference standard in method dev.. solid vendor.

Dr. Camila Ribeiro December 25, 2025

Very good thanks!!

Dr. Azadeh Naderi December 24, 2025

L-Glutathione 1500mg has been a steady reorder for our lab work. Fill weight per vial has been accurate against the label and the COA was included with the shipment as usual. The desiccant pack had shifted around a little inside the box and there was a bit more packaging than the order really needed, minor friction on receipt. Nothing that affected the material itself and we would order again.

Amelie Barbier, PhD December 23, 2025

Institutional PO for L-Glutathione went through straightforward no hassle

Dr. Obinna Ezenwa December 22, 2025

Excellent L-Glutathione, thanks!

Dr. Sofia Lindqvist December 20, 2025

Ordered L-Glutathione 1500mg in bulk for a multi-site study and quality was uniform across the shipment. Coordinating the delivery was hassle-free.

Dr. Andreas Bauer December 17, 2025

L-Glutathione 1500mg solid ref std.. reconstitution notes thin but good!!

Dr. Alfie Ashcroft December 16, 2025

solubility in bacteriostatic water was excellent invoicing was itemized and clear and they keep less common research peptides available when other vendors are out.

Dr. Minh Le December 15, 2025

Ordered L-Glutathione 1500mg on a tight timeline for an upcoming method validation and it landed faster than expected. Box showed up well packed and the cold packs were still doing their job. Labels were legible and the vial was exactly what we needed for the run. No back and forth with procurement because the invoice matched the PO. Exactly the kind of turnaround you want when the calendar is already full.

Dr. R. S. December 15, 2025

The L-Glutathione 1500mg vial crimp and stopper seal were solid third-party lab testing was available on request.. exactly what we needed.

Thiago Araujo, PhD December 13, 2025

Emailed support about lot specs on the L-Glutathione 1500mg and they replied w/ clear answers same afternoon. Knew the COA details without passing me around. Exactly the kind of vendor I'd rec'd when assay schedules are tight…

Dr. Mikhail Belov December 12, 2025

l-glutathione 1500mg has been consistent in our bench assays and dilutions behave the same lot to lot. Shipping was quick too and I've already rec'd it to two people on our team.

Anonymous researcher December 9, 2025

Support helped track our lot COA; invoice formatting was very basic and restock timing runs slow.

Dr. Ewa Zielinski December 7, 2025

Scientipeptides carries less common research peptides we could not source elsewhere.. bulk pricing made sense for a larger stability study and the product specs on the site matched what landed in the lab. Tracking was accurate and support responded quickly when we asked about lot documentation. Already pointed two colleagues here!!

Dr. Azadeh Karimi December 4, 2025

All good, thanks!!

Haoran He, PhD December 4, 2025

Reordering was quick and accurate last time and the price point works for our constrained research budget we go through a fair amount each quarter and this has been one of the easier lines to keep stocked.

Dr. Eoin December 2, 2025

documentaion questions answered fast, thank you

Dr. Andreas Ioannou December 2, 2025

Cold-chain packaging arrived still cold and the tamper-evident seals were intack when we opened the box. Everything looked well handled from pickup through delivery. Really appreciate the care put into shipping.

Dr. Sergio Martinez November 30, 2025

Perfect L-Glutathione thanks…

Dr. Burak Demir November 29, 2025

The L-Glutathione 1500mg lyophilised cake was intact with no clumping when we reconstituted. LC-MS identity confirmation lined up with the sequence on the COA. I emailed a documentation question and got a clear answer back fast. Packaging and seals looked good on arrival. This is the kind of supplier we keep bookmarked for peptide work…

Dr. Soyeon Lim November 29, 2025

L-Glutathione 1500mg complete nothing missing.. great!

Dr. Roya Jafari November 26, 2025

L-Glutathione 1500mg shipped with a COA in the box, endotoxin and sterility figures were documented and independent third-party lab testing was available on request so we had the full paper trail before opening anything.

Dr. Emi Kato November 22, 2025

L-Glutathione docs answered fast.

Anonymous researcher November 21, 2025

The peptide reconstituted to a clear solution and remained stable through our assay timeline. Documentation supported our method validation.

Dr. Padraig November 21, 2025

L-Glutathione 1500mg fits our constrained research budget better than the name-brand option we quoted last month. Purity on the COA was in line with what we need for assay work and we did not have to sacrifice lot documentation to save money. Shipping was reasonable and the vials showed up ready to go into the freezer. For a core lab watching every line item this is solid value.

Dr. Peng Luo November 20, 2025

L-Glutathione 1500mg consistent bench assays, solid reference std.

Dr. Antonia Rojas November 20, 2025

l-Glutathione 1500mg purity checked out on our own analytical run and the discreet unbranded outer packaging was a nice touch for receiving at the lab dock.

Dr. Yong Song November 19, 2025

batch paperwork was thorough and easy to file w/ our QMS. Stability and shelf-life info came in the same packet so we didnt have to chase it. L-Glutathione 1500mg is our new default for antioxidant reference work.

Francesco Colombo, PhD November 17, 2025

Perfect glutathione exactly as described

Dr. Kayla Green November 16, 2025

L-Glutathione 1500mg arrived quickly and the insulated packaging with gel packs kept temp stable through delivery. Exactly the kind of turnaround and cold-chain handling we expect on repeat orders.

Anonymous researcher November 15, 2025

L-Glutathione 1500mg lists net peptide content versus gross mass clearly which helps our lab notebook entries. Reconstitution went fine though the reconstitution notes were pretty minimal.. still satisfied with the lot and will order again…

Dr. Amara November 14, 2025

Ordered a larger qty for an extended antioxidant panel and the bulk tier made sense on paper. Vials arrived labeled consistently and the lot paperwork tracked cleanly. No substitutions and no partial fill surprises. We ran preliminary QC the same week. Good fit for a multi-month study.

Anonymous researcher November 4, 2025

Clean dissolve, HPLC matched COA.. solid lot.

Dr. Penelope Waverley November 4, 2025

Glad we switched, fills spot on, plain outer box.

Dr. Zhen Zheng October 30, 2025

L-Glutathione 1500mg arrived in high quality glass vials that feel sturdy on the bench and the labels held up fine through handling. Turnaround was faster than quoted and I had it in the freezer the same week I submitted the PO which is exactly what you want when a run is already queued.

Dr. Leonardo October 29, 2025

Support helped us pull a specific lot COA quickly batch-to-batch consistency has held across reorders and storage and handling instructions on the insert were clear.

Dr. Renata Miranda October 29, 2025

We moved our glutathione orders here and the stability and shelf-life data on the COA helped us plan lab storage with confidence. L-Glutathione 1500mg has performed consistently in our prep workflows. Tracking updates were a little sparse in transit, but everything arrived intact and we are satisfied.

Dr. Aiko Mori October 28, 2025

Had a shipping snag on L-Glutathione 1500mg and support resolved it smoothly without a lot of runaround.

Dr. Paul Braun October 27, 2025

Invoices came through clear and itemized, which makes procurement happy on the L-Glutathione 1500mg line. Material and COA paperwork have been solid every time. Restock timing on this SKU can run a little slow, but we are still satisfied and will reorder.

Anonymous researcher October 26, 2025

L-Glutathione 1500mg gave us a clean chromatogram with no unexpected side peaks and it has been a solid reference standard for our method development work.

Dr. Andrew October 23, 2025

The L-Glutathione 1500mg lot gave us a clean chromatogram with no unexpected side peaks on repeat HPLC.

Dr. Priya Nambiar October 23, 2025

Certificate of analysis, mass spec, and HPLC all supplied. This level of documentation is exactly what we need for reproducible research.

Paula Bravo, PhD October 21, 2025

Fill matched label checkout was clunky still reordering.

Dr. Gabriela Oliveira October 19, 2025

Blanks stayed clean with no contamination carried into runs. LC-MS identity lined up with the expected sequence. Discreet unbranded outer packaging, no lab gossip on the doorstep.

Dr. Hua Xu October 17, 2025

Had a question about storage temp before we aliquoted and support got back same afternoon with a clear answer which let us keep moving on a tight grant timeline. COA specs matched what we needed for our SOP appendix. Vials arrived sealed and the outer shipper was intact. No drama, just what you want when procurement is watching deadlines.

Dr. Catalina Guerrero October 16, 2025

our procurement team needed a specific lot COA for L-Glutathione 1500mg and support tracked it down without a runaround.. The vials arrived well labeled and the documentation matched what we expected for bench use. We appreciate vendors who actually respond when audit questions pop up. Will keep Scientipeptides on our approved list for glutathione.

Dr. Harry Ashby October 16, 2025

Accurate tracking, fast delivery, basic invoice though.

Dr. Tariq Saleh October 12, 2025

Perfect, thanks!!

Dr. F.L. October 10, 2025

L-Glutathione perfect!!

Dr. Chiara Barbieri October 9, 2025

Our in-house HPLC on L-Glutathione 1500mg lined up with the stated purity on the COA, very reasuring…

Dr. Sofia Barbieri October 9, 2025

Perfect rec'd thanks!

Dr. Eunji Ahn October 8, 2025

L-Glutathione 1500mg perfect thanks…

Andreas Sommer, PhD October 5, 2025

L-Glutathione 1500mg product specs on the site matched the vial label and COA details. No surprises on arrival.

Kevin Gray, PhD October 1, 2025

solid L-glutathione… checkout was clunky!!

Anonymous researcher September 27, 2025

L-Glutathione 1500mg has been right on fill mass every vial, though restock timing on this one can run slow.

Rashid Sayegh, PhD September 25, 2025

Excellent L-Glutathione.

Dr. Gabriel Santos September 24, 2025

No complaints — clean product, accurate paperwork, and quick delivery. Exactly what a research lab needs from a reagent supplier.

Dr. Jasper Ashworth September 19, 2025

L-Glutathione 1500mg from Scientipeptides has been a solid add to our peptide inventory. I emailed a few technical questions about the COA and storage notes and their team replied same day with clear answers… really appreciate that kind of responsiveness.

Dr. Ifeoma September 19, 2025

awsome glutathione, net qty clear!

Dr. Sofia September 18, 2025

Less common research peptides are actually available here when we need them which takes a lot of uncertainty out of planning our bench runs…

Dr. Tariq Aoun September 18, 2025

L-Glutathione 1500mg handling notes clear, bulk pricing worked.. solid!!

Dr. Lucas Correia September 17, 2025

Tamper seals intact, strong budget value.

Dr. Cheng Pan September 16, 2025

Sterility figures documented, quality glass vials.

Anonymous researcher September 15, 2025

Storage and handling instructions were clear, less common peptides showed up in stock when we needed them and our HPLC run gave a clean chromatogram w/ no unexpected side peaks.. exactly what we wanted for this protocol.

Dr. Sami September 13, 2025

Placed a multi-vial bulk order and everything was packed cleanly with no mix-ups. Tracking stayed accurate from dispatch through delivery which helped us coordinate receiving.

Dr. M.V. September 12, 2025

L-Glutathione 1500mg vial had the full stated qty w/ minimal loss, price fit our tight budget.. tracking updates were accurate the whole way!!

Dr. Bram van den Berg September 12, 2025

L-Glutathione dissolves clen.

Dr. Emil Moen September 12, 2025

Support helped track down our lot COA, vial lot matched exactly, tracking updates were accurate in transit!!

Dr. Mahsa September 11, 2025

L-Glutathione bulk ok, 3rd party COA, support slow

Dr. Yuna September 10, 2025

Quick reorder, faint label.

Dr. Lucia September 10, 2025

L-Glutathione 1500mg showed up on the day the tracking email said it would which sounds basic but our last supplier never managed that. Updates in transit were accurate at each scan point. Vials were cold and the COA was tucked in the shipment manifest. I have pointed our adjacent lab toward Scientipeptides based on this experience alone. Reliable logistics matter when you are running timed assays.

Dr. Adaeze Adebayo September 9, 2025

Perfect COA details.

Dr. Dylan Wallace September 6, 2025

Desiccant was present and intact on arrival, which matters for how we store material in the lab. Vials looked clean and the documentation package was straightforward. We had one question about lot assignment and support replied roughly a day later, not instant but they answered clearly. Overall the shipment met our specs and we would order again.

Dr. Andrei September 6, 2025

L-Glutathione 1500mg vial glass was thick and intact internatonal shipping landed fast with cold pack still cold and the outer box showed no damage.

Dr. Beatriz September 2, 2025

COA lot number matched the vial label exactly L-Glutathione 1500mg worked well as a reference standard for method development and tracking updates were accurate in transit.

Valentina Greco September 1, 2025

Good L-Glutathione, slow ship.

Beatriz Navarro, PhD August 31, 2025

exactly as listed…

Dr. Silvia Colombo August 30, 2025

l-glutathione 1500mg invoice was itemized for procurement and insulated packaging w/ gel packs held temp through delivery.

Anonymous researcher August 26, 2025

Received the order ahead of schedule with full documentation. The material integrated smoothly into our existing protocol.

Dr. A.O. August 19, 2025

L-Glutathione 1500mg landed with the COA lot number matching the vial label exactly and Scientipeptides answered my documentation questions same day, HPLC specs, MS trace, all of it, zero runaround.

Dr. Thiago Oliveira August 18, 2025

Verry good.

Eleni Antoniou, PhD August 18, 2025

Good L-Glutathione, desiccant shifted…

Dr. D.A. August 17, 2025

Budget is tight in our group so price and value matter and this has been one of the better fits we have found for a high-fill peptide. Each vial included desiccant that was intact on arrival and the material has behaved well as a reference standard while we tune our extraction method. COA documentation was complete and reorders have shipped on the timeline quoted. We have already added it to our approved vendor list for the next grant cycle.

Dr. Ha August 16, 2025

Good glutathione value tracking fine label faint tho

Dr. Tomas Campos August 14, 2025

L-Glutathione 1500mg arrived w/ tracking updates that stayed accurate in transit and Scientipeptides has been a reliable lab supplier for our group.. exactly the kind of consistency we need on repeat orders.

Dr. Frida August 12, 2025

We picked up L-Glutathione 1500mg for a redox assay series and the whole run was painless from checkout to bench. Tracking updates were spot on in transit so receiving knew exactly when to pull the cold shipper. Already queued the next restock from Scientipeptides!!

Zainab Bello August 12, 2025

We've run this glutathione across several bench assays now and performance has been consistent lot to lot. Reconstitution is predictable and our dilutions track cleanly on the plate reader every time. COA and batch info arrive w/ each shipment so filing is quick. Packaging has been solid and nothing has arrived compromised in transit. For something we rec'd on repeat this is exactly the reliability we want!!

Dr. Jeroen Jansen August 11, 2025

L-Glutathione 1500mg has performed consistently in our bench assays across multiple lots. COA lists molecular weight and sequence clearly and they included stability/shelf-life data which saves us extra back-and-forth.

Dr. Anya Sharma July 28, 2025

Good solubility profile and stable in our storage conditions. Results were reproducible across technical replicates.

Dr. Sigrid Eriksson July 26, 2025

L-Glutathione 1500mg has been a reliable staple from Scientipeptides for our lab and tracking updates were a little sparse in transit but the order showed up intact and I'd reorder.

Tomas Salazar, PhD July 24, 2025

For a larger oxidative stress study we needed twelve vials of L-Glutathione 1500mg and the bulk tier actually made sense once shipping was included. Each unit arrived with matching lot codes and intact desiccant. We filed the COAs before opening anything, which is our usual protocol. Pricing per vial beat what we were paying through our old distributor. No surprises on the invoice either.

Dr. Ines July 19, 2025

L-Glutathione 1500mg landed fast with molecular weight and sequence listed clearly on the COA.. genuinely impressed with this one.

Dr. T. P. July 16, 2025

We've ordered from here multiple times now.. The glass vials feel substantial and the stoppers seat cleanly without any flaking or rough edges. Small detail but it matters when you're handling material daily.

Dr. Ping Wu July 16, 2025

L-Glutathione COA had MW listed support answered fast.

Dr. Kenji Kobayashi July 15, 2025

the L-Glutathione 1500mg reconstituted clear with no cloudiness and that kind of consistency makes bench prep a lot smoother.

Sanne van Dijk, PhD July 15, 2025

Certain research peptides are hard to source locally and this glutathione was in stock when we needed it. Outer packaging was plain and unbranded, which our receiving desk appreciates. Reconstitution guidance came in the insert so new grad students did not have to dig through the FAQ. Vials looked professional and the COA was easy to file. We will be back for the next oxidative stress run.

Dr. Anastasia Lebedev July 13, 2025

Very good.

Dr. U. O. July 12, 2025

COA lot matched the vial label exactly and residual TFA/solvent levels on the sheet looked low. Reliable supplier for our oxidative stress bench work overall. Support took about a day to reply but the material checked out fine.

Dr. Riya Sharma July 9, 2025

Third reorder and endotoxin/sterility figures on the COAs have been documented every time. Batch-to-batch behavior in our assays has stayed tight w/ no drift between lots. Packaging and cold-chain temp looked good on arrival too. Easy supplier to keep on a standing PO for the program…

Dr. Matteo July 8, 2025

l-glutathione 1500mg hit a good price point for our constrained research budget and the order was easy to justify on paper. When we needed a specific lot COA for filing support tracked it down same day without extra emails. Vials arrived sealed and labeled cleanly. No drama on reciept and we moved straight into prep.

Dr. R.R. July 7, 2025

Ran in-house HPLC on the L-Glutathione 1500mg and it lined up with the stated purity on the COA. Nice to see the numbers agree before we commit a full assay plate. Will keep this on our standard order list.

Hyejin Song July 7, 2025

l-glutathione restocks reliable, full order recieved.

Dr. Suresh Sethi July 3, 2025

Opened the shipment and every lyophilised cake was intact with no clumping or powder breakup in the vial. That kind of presentation makes reconstitution straightforward in the hood. We've run multiple preps since and handling has been uniform across units. Documentation in the box matched what we expected from the listing. Really pleased with how this lot arrived and stored on the bench.

Dr. Thibault July 2, 2025

L-Glutathione 1500mg gave us a clean chromatogram with no unexpected side peaks on our HPLC check. Support took about a day to reply on a shipping question but the material itself was exactly what we needed and we'd order again.

Dr. C. H. July 2, 2025

Emailed support with a COA formatting question and got a clear answer back within hours, easy rec to colleagues after that.

Dr. Reza Karimi July 1, 2025

The lyophilised cake came through fully intact with no clumping or breakage in transit. Reconstituted cleanly into a clear solution and the fill looked right when we prepped it for the bench.

Dr. Cian O'Connor June 30, 2025

Lyophilised cake was intact with no clumping when we opened the vial. Desiccant was included and still intact after transit. Warmly appreciate the attention to packaging detail.

Astrid B. June 28, 2025

L-Glutathione 1500mg came with clear stability and shelf-life data that our QA file could use without extra formatting.

Dr. O. A. June 25, 2025

l-glutathione 1500mg arrived with the full stated qty and almost no powder stuck to the cap. Weighed each vial on the bench balance and the numbers lined up. Solid supply for our oxidative stress panels.

Dr. Maja Holm June 23, 2025

L-Glutathione rec'd reliable lab supplier w/ every order

Dr. Viktor Sokolov June 23, 2025

Perfect glutathione, thanks!

Dr. T. R. June 23, 2025

solid value!!

Dr. Celine Laurent June 22, 2025

Good order.. support took about a day and checkout was a little clunky but we'd reorder.

Dr. Mariana Pereira June 21, 2025

Net peptide content vs gross mass was spelled out clearly on the label and the unit cost fits our tight reagent budget without skimping on batch paperwork.

Dr. V.I. June 20, 2025

Fill looked right w/ minimal loss at the bottom of the vial and everything weighed out as labeled.

Dr. D.E. June 19, 2025

Crimp and stopper seal on every vial felt rock solid, which makes bench handling and cold storage a lot less stressful right out of the shipment.

Dr. Martin Ibarra June 17, 2025

L-Glutathione 1500mg showed up in discreet unbranded outer packaging, support resolved a tracking scan issue same day, and the shipment stayed on schedule through delivery!! Would reorder without hesitation…

Dr. Klaus June 16, 2025

Vial crimp and stopper seal were solid on arrival and the material looked fine out of the box. Reconstitution notes on the site were pretty minimal and checkout felt a little clunky, but nothing that would stop us from ordering again for the next run.

Dr. Jacob James June 15, 2025

Dissolved clean in bac water perfect

Kerem D. June 7, 2025

We picked up L-Glutathione 1500mg for a larger study and the bulk pricing actually made sense for the qty we needed.. Order went through without drama and everything showed up labeled correctly. Material looked good on receipt and we had no surprises during prep. Would rec'd this route if you are stocking up for a multi-vial protocol.

Dr. Mariana June 6, 2025

institutional PO checkout was straightforward and accounts payable had no issues matching the invoice to the packing slip. Glutathione arrived with intact seals and readable lot IDs on every vial. Documentation bundled in a way our compliance folder accepts without rework. Clean handoff from receiving to the peptide fridge. Exactly how repeat ordering should feel.

Dr. L. L. June 5, 2025

We have reordered L-Glutathione 1500mg several times and batch-to-batch consistency has held up across every lot. Same dissolution behavior and clean prep each time which saves us revalidation work… definitely our go-to now!!

Dr. Katharina June 3, 2025

Rec'd in discreet unbranded outer packaging which our team likes, though the invoice formatting was very basic and one vial cap was a little stiff to break, still glad we switched suppliers.

Anonymous researcher June 1, 2025

Perfect, thanks!

Dr. Yemi Adeyemi May 28, 2025

Excellent L-Glutathione, thanks!

Dr. J. F. May 27, 2025

L-Glutathione, clean chromatogram.

Dr. Camille Barbier May 24, 2025

We switched from our old peptide house for a larger glutathione study and the bulk pricing actually fit a constrained research budget. L-Glutathione 1500mg arrived labeled cleanly with COAs that matched each vial lot. Reconstitution in the lab was straightforward and the qty we needed was handled without back-and-forth. For the scale we run, the value is hard to beat. Glad we moved our orders here.

Dr. Haeun Han May 18, 2025

Rec'd L-Glutathione late but LC-MS identity matched fine

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L-Glutathione 1500mg

Certificate of
Analysis (COA)

Peptides validated with documented Certificate of analysis® for all products. See all COAs.

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L-Glutathione 1500mg specification card
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L-Glutathione 1500mg

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FAQs

What are Scientipeptides used for?

All Scientipeptides products are sold for research use only. They are not intended for human consumption, therapeutic, or diagnostic use. Our peptides are designed exclusively for controlled laboratory research, educational studies, or analytical testing. Every product label and supporting document clearly reflects this compliance standard.

Who is eligible to purchase peptides?

Scientipeptides products are available to qualified researchers, laboratories, and educational institutions. Purchasers must confirm the products will be used for research purposes only.

How should peptides be handled and stored?

Lyophilized peptides should be stored at -20°C and protected from light and moisture. Once reconstituted, peptides should be used promptly and stored according to the documentation included with each product.

Why do peptide vials appear nearly empty?

Lyophilized (freeze-dried) peptides often appear as a thin film or small pellet at the bottom of the vial. The milligram amount stated on the label is verified by HPLC and mass spectrometry regardless of visual volume.