Peptide Supply Co vs VAYN Research
Across the 25 products both vendors stock, Peptide Supply Co has the lower effective price per mg on 13 and VAYN Research on 12. Peptide Supply Co lists 71 tracked listings across 56 products; VAYN Research lists 29 across 25. On certificates of analysis the in-stock products we track rate broad at Peptide Supply Co and none found at VAYN Research. Based on the certificates our crawler found; vendors may publish more than we index. These are price and document observations, not quality ratings, and neither vendor is endorsed.
Peptide Supply Co is a US research-peptide vendor that lists 69 injectable peptides, 11 blends and 1 capsule.
- Price vs market median
- 22% below market
- Tracked catalog
- 56 products · $
- Cheaper on
- 13 of 25 shared
- COA coverage
- Broad
VAYN Research is a research-peptide vendor that lists 29 injectable peptides, including BPC-157, TB-500 and Melanotan II.
- Price vs market median
- 35% below market
- Tracked catalog
- 25 products · $
- Cheaper on
- 12 of 25 shared
- COA coverage
- None found
Vendor facts
Dashes mark facts we have not recorded yet. Vendor-stated details come from each storefront and can change without notice. Facts for Peptide Supply Co were extracted from the vendor's site and not yet reviewed by us.
Certificates on file
Coverage rates how many of the in-stock products we track have a certificate our pipeline read and matched to a catalog peptide. Based on the certificates our crawler found; vendors may publish more than we index. We do not test products, and a certificate cannot show authenticity, chain of custody or sterility.
Carried by one vendor only
Only at Peptide Supply Co
31 products the other vendor does not list
- Pinealon$3.50
- Semax$3.80
- Thymosin Alpha-1$7
- Adamax$6
- ARA-290$4
- Cagrilintide$8.50
- Cardiogen$2.50
- Cartalax$2.50
Prices shown are per mg for the cheapest in-stock listing we track.
Questions
- Is Peptide Supply Co cheaper than VAYN Research?
- On the 25 products both vendors stock, Peptide Supply Co has the lower effective price per mg on 13 and VAYN Research on 12. Each side uses the cheapest in-stock listing we track for that product, after any public discount code, and prices change often.
- How much COA coverage does each vendor have?
- Peptide Supply Co: broad, newest test dated 2026-09-11. VAYN Research: none found. Based on the certificates our crawler found; vendors may publish more than we index. We do not test products ourselves, and a certificate cannot prove authenticity or sterility.
- How do shipping and payment differ between Peptide Supply Co and VAYN Research?
- Peptide Supply Co: shipping free, 2-2 days in transit. VAYN Research: we have not recorded shipping or payment details yet. Details come from each vendor's own site and can change without notice; check the storefront before ordering.