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High-purity peptides,
documented lot by lot.
PepElyx supplies research compounds as lyophilized powder, with HPLC-tested purity and a Certificate of Analysis for every single lot. Discreet packaging, tracked worldwide shipping, and compounds you can trace from order to delivery.
Certificate of Analysis on every lotThird-party HPLC verified before listing
Best sellers.
View all peptides →
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NAD+
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SS-31
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KLOW80
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Sermorelin
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Tesamorelin
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Retatrutide
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Tirzepatide
Purity you can check — in writing.
Every vial is lot-labeled, ships in plain packaging with tracking, and comes with a certificate you can verify before you use it.

99%+ identity purity
Every compound runs through HPLC identity and purity analysis before it is ever listed for sale.
OUR TESTING PROCESS →
COA on every lot
Each vial carries a catalog number, and its lot certificate is posted on the product page.
LOOK UP A COA →
Discreet worldwide shipping
In-stock orders ship the same business day, in plain sealed packaging with a tracked delivery.
SHIPPING DETAILS →
Purity-match guarantee
Run the lot through your own third-party lab. If it does not match the posted certificate, we refund or replace it.
OUR GUARANTEE →What researchers say
Unboxing the package at home
I have had an open wound on my foot for 2 years with little to no change and in 3 weeks it is half its size and healing very nicely.
Everything is great! The glow is awesome, Reta on point and semorelin is fantastic so far.
Looks great! Got what I ordered and I'm very happy!!!
yes, thanks
So far so good with the KLOW. We haven't finished with the others.
New compounds, lot data, and restock alerts.
We send occasional updates on new products, restocks, and newly published lot certificates. No spam.