Before diving into the reviews, here's the framework we use to evaluate vendors:
Ion Peptide consistently ranks as the best value vendor on PepsTracker. Their prices per mg are among the lowest across the board, and they carry one of the largest catalogs with over 70 peptides. COAs are published for all batches. The ?ref=Glowlab code applies 10% off automatically through our tracker.
Ascension offers the largest discount of any vendor we track — up to 50% off through our affiliate link. They carry a solid catalog with a focus on quality. Their Semaglutide pricing is competitive and they're known for reliable stock levels.
Glacier Aminos focuses on GLP-1 peptides and a handful of popular healing compounds. Their catalog is smaller than competitors but their GLP-1 pricing is consistently competitive. Great choice if you're primarily researching Semaglutide, Tirzepatide, or Retatrutide.
MileHigh carries one of the broadest catalogs in the space — over 50 peptides spanning GLP-1s, cognitive peptides, bioregulators, and healing blends. Pricing is mid-tier. A great one-stop-shop for researchers who need multiple compounds at once.
EZ Peptides offers competitive pricing on core peptides like BPC-157, Semaglutide, and Ipamorelin. They carry a solid mid-size catalog and are a reliable choice for common research compounds at fair prices.
Labsourced operates a clean Shopify storefront with a wide catalog. They carry several harder-to-find peptides including bioregulators, Humanin, and PNC-27. Pricing is mid-range and they're worth checking for specialty compounds.
LA Peptides carries the deepest bioregulator catalog in the space — Cardiogen, Testagen, Vesugen, Vilon, Ovagen, Pancragen, Crystagen, and more. If you're researching peptide bioregulators, LA Peptides is the go-to vendor. Their main catalog also covers all popular peptides.
AMP Peptides offers solid pricing on core research compounds. Their catalog is focused on popular peptides without as many specialty items. A good alternative when other vendors are out of stock.
RetaOne Labs is a focused vendor offering excellent pricing on GLP-1s and a selection of popular peptides. Their Tirzepatide and Retatrutide pricing is among the most competitive we track. Smaller catalog but strong value on the compounds they carry.
Puratek is a newer vendor that has quickly established itself with competitive pricing and a clean, modern storefront. They publish batch-specific COAs for every product. Their BPC-157 at $29.95/10mg and Epithalon at $26.95/10mg are among the best prices we track.
Atomik Labz carries a solid range of core research peptides. Pricing is mid-to-high range compared to the field. They're a known quantity in the space with a reliable track record.
Nura Peptide offers 15% off through our affiliate link — one of the better discount rates. Their catalog covers all major peptides with competitive GLP-1 pricing. A strong option particularly for Semaglutide and Tirzepatide.
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