Core Peptides Direct vs Peptide Supply Co
Across the 36 products both vendors stock, Core Peptides Direct has the lower effective price per mg on 13 and Peptide Supply Co on 21, and 2 price the same to the cent. Core Peptides Direct lists 60 tracked listings across 45 products; Peptide Supply Co lists 69 across 54. On certificates of analysis the in-stock products we track rate none found at Core Peptides Direct and broad at Peptide Supply Co. 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.
Core Peptides Direct is a research-peptide vendor that lists 60 injectable peptides, including 5-Amino-1MQ, BPC-157 and GHK-Cu.
- Price vs market median
- 14% below market
- Tracked catalog
- 45 products · $
- Cheaper on
- 13 of 36 shared
- COA coverage
- None found
Peptide Supply Co is a US research-peptide vendor that lists 67 injectable peptides, 11 blends and 1 capsule.
- Price vs market median
- 20% below market
- Tracked catalog
- 54 products · $
- Cheaper on
- 21 of 36 shared
- COA coverage
- Broad
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 Core Peptides Direct
9 products the other vendor does not list
- Cerebrolysin$1.53
- GHRP-6$2.80
- Hexarelin$7.60
- Humanin$10.10
- LL-37$10.80
- Mazdutide$8.13
- Semaglutide$3.26
- Thymalin$6.40
Only at Peptide Supply Co
18 products the other vendor does not list
- CJC-1295 (no DAC)$5.50
- NAD+$0.08
- Adamax$6
- Dihexa$16
- GHK-Cu + KPV$0.93
- GLOW$1.11
- Ipamorelin + CJC-1295 (no DAC)$5.50
- KLOW$1.13
Prices shown are per mg for the cheapest in-stock listing we track.
Questions
- Is Core Peptides Direct cheaper than Peptide Supply Co?
- On the 36 products both vendors stock, Core Peptides Direct has the lower effective price per mg on 13 and Peptide Supply Co on 21, with 2 priced the same to the cent. 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?
- Core Peptides Direct: none found. Peptide Supply Co: broad, newest test dated 2026-09-11. 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 Core Peptides Direct and Peptide Supply Co?
- Core Peptides Direct: we have not recorded shipping or payment details yet. Peptide Supply Co: shipping free, 2-2 days in transit. Details come from each vendor's own site and can change without notice; check the storefront before ordering.