Liberty Peptides vs Peptide Supply Co
Across the 37 products both vendors stock, Liberty Peptides has the lower effective price per mg on 4 and Peptide Supply Co on 31, and 2 price the same to the cent. Liberty Peptides lists 58 tracked listings across 46 products; Peptide Supply Co lists 69 across 54. On certificates of analysis the in-stock products we track rate partial at Liberty Peptides 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.
Liberty Peptides is a US research-peptide vendor based in Wilmington, DE that lists 56 injectable peptides.
- Price vs market median
- 2% below market
- Tracked catalog
- 46 products · $$
- Cheaper on
- 4 of 37 shared
- COA coverage
- Partial
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
- 31 of 37 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 Liberty Peptides and 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 Liberty Peptides
9 products the other vendor does not list
1 more on the Liberty Peptides pageOnly at Peptide Supply Co
17 products the other vendor does not list
- Retatrutide$3.33
- Tirzepatide$1.75
- Adamax$6
- CJC-1295 (with DAC)$10
- GHK-Cu + KPV$0.93
- GLOW$1.11
- Glutathione$0.04
- Ipamorelin + CJC-1295 (no DAC)$5.50
Prices shown are per mg for the cheapest in-stock listing we track.
Questions
- Is Liberty Peptides cheaper than Peptide Supply Co?
- On the 37 products both vendors stock, Liberty Peptides has the lower effective price per mg on 4 and Peptide Supply Co on 31, 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?
- Liberty Peptides: partial, newest test dated 2025-12-12. 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 Liberty Peptides and Peptide Supply Co?
- Liberty Peptides: 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.