Peptide Vendor Directory is an independent guide. We sort peptide products by type and list the sellers that have the best reputation in each group. We don't sell peptides, give medical advice, or suggest that anyone use peptides for any reason. Our goal is simply to make a confusing topic easier to understand for people who are already looking into it.
How we choose what to list
We research each peptide on its own before we ever look at whether a seller has an affiliate program. We decide who to list based on:
- Reputation — what independent communities, review sites, and industry coverage say about a seller.
- For research-only suppliers: whether they publish independent lab reports (Certificates of Analysis) proving what's in the product and how pure it is, whether they test consistently, how long they've been around, and what customers report.
- For prescription telehealth: whether their doctors are properly licensed, whether they're clear about how the service works, whether they use U.S. pharmacies, and whether they've stayed clear of serious regulatory trouble.
- For skincare: whether it's an established brand selling in the normal, regulated cosmetics market.
We review listings from time to time. The "Added" date next to each seller is when we first added it — not when we last double-checked it. See the Terms of Use for what that means for you.
How affiliate links work
Some links on this site are affiliate links, marked with an Aff. tag. If you buy something through one, we may earn a small commission — and it never costs you anything extra. We only add this tracking after we've already decided to list a seller on its own merits. We won't add a seller just because it has an affiliate program, and we won't drop one just because it doesn't. Some retailer links are also monetized automatically through Skimlinks, an affiliate network that rewrites outbound links to participating stores. Research-only sellers and nonprofit resources are explicitly excluded from this and carry no affiliate links at all.
What this site is not
- It's not a pharmacy, a clinic, or an online doctor service.
- It's not a source of medical advice, diagnosis, or instructions on how much to take.
- It's not an endorsement of any seller, product, or way of using one.
For anything to do with your health, talk to a licensed doctor where you live. Before buying, check each seller out yourself.
Who runs this
Operated by Halfnote LLC, based in California, USA. For corrections, partnership inquiries, or anything else, see the contact page.