Core Peptides vs Fusion Peptide
Across the 17 products both vendors stock, Core Peptides has the lower effective price per mg on 1 and Fusion Peptide on 16. Core Peptides lists 67 tracked listings across 71 products; Fusion Peptide lists 149 across 26. On certificates of analysis the in-stock products we track rate broad at Core Peptides and partial at Fusion Peptide. 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 is a US research-peptide vendor that lists 66 injectable peptides and 15 blends, including Epitalon, PT-141 and KPV.
- Price vs market median
- 9% above market
- Tracked catalog
- 71 products · $$$
- Cheaper on
- 1 of 17 shared
- COA coverage
- Broad
Fusion Peptide is a US research-peptide vendor based in Glendale, AZ that lists 47 injectable peptides and 1 nasal spray.
- Price vs market median
- 22% below market
- Tracked catalog
- 26 products · $
- Cheaper on
- 16 of 17 shared
- COA coverage
- Partial
Vendor facts
Dashes mark facts we have not recorded yet. Vendor-stated details come from each storefront and can change without notice. Facts for Core Peptides and Fusion Peptide 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
54 products the other vendor does not list
- DSIP$8.20
- Epitalon$3.60
- FOXO4-DRI$23.50
- Ipamorelin$8.60
- KPV$9.50
- Pinealon$3.75
- Thymosin Alpha-1$14.90
- ACE-031$173
Only at Fusion Peptide
9 products the other vendor does not list
- 5-Amino-1MQ$3
- Melanotan II$2.04
- SS-31$1.84
- Cagrilintide$7.50
- Crystagen$2.25
- Dihexa$3.84
- Glutathione$0.04
- IGF-1 DES$40.12
Prices shown are per mg for the cheapest in-stock listing we track.
Questions
- Is Core Peptides cheaper than Fusion Peptide?
- On the 17 products both vendors stock, Core Peptides has the lower effective price per mg on 1 and Fusion Peptide on 16. 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: broad, newest test dated 2026-07-22. Fusion Peptide: partial, newest test dated 2026-02-25. 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 and Fusion Peptide?
- Core Peptides: ships domestically within the US, accepts card. Fusion Peptide: accepts card, zelle, cashapp, crypto. Details come from each vendor's own site and can change without notice; check the storefront before ordering.