Peptide vendors compared by price and reviews

Peptide Library tracks 50 research peptide vendors and 20 community reviews. Each profile below lists that vendor's catalogue with price per mg, so you can compare the same peptide across suppliers. Research use only. Not medical advice.

Ratings average every published review; the order uses a rating adjusted for how many reviews a vendor has — see how rankings work. Peptide Library does not sell peptides and is not a storefront. Some vendors are affiliate partners; we may earn a commission on qualifying purchases at no extra cost to you.

All vendors (50)

50 vendors

Some vendors are affiliate partners: we may earn a commission on purchases through our links, at no extra cost to you. Commissions never change rankings or reviews. How rankings work

Run a store? Apply to be listed or manage your listing.

Filter vendors

A vendor must match every section you use.

Shipping destination

We never use your location; pick a country to check shipping.

Average rating

Average rating

Number of reviews

Number of reviews

Vendor location

Vendor location

Ships from, else based in
Shipping

Shipping

Vendors must have all you pick
Products

Products

Carries any of
Deals

Deals

Vendors need any one you pick

How this vendor list is ordered

By default vendors that confirm they ship to your country come first, then a best-match score built from a review rating adjusted for review count, outbound clicks and catalogue size — never from how much a vendor pays. 9 of 50 vendors currently carry at least one review. Affiliate status never changes a vendor's position.

What price per mg means

Price per mg is the listed vial price divided by the vial's milligrams, when the vial size is known. It makes a 5 mg vial comparable to a 10 mg one. It is a comparison aid, not a price you pay Peptide Library — we do not sell peptides.

Filter and search vendors

The interactive vendor list adds shipping-destination filters, ratings, deals, location and sorting. To compare a single peptide across every vendor, open its profile in the peptide library.