Nexgen Peptides vs Peptide Works
Across the 39 products both vendors stock, Nexgen Peptides has the lower effective price per mg on 20 and Peptide Works on 17, and 2 price the same to the cent. Nexgen Peptides lists 92 tracked listings across 59 products; Peptide Works lists 90 across 54. On certificates of analysis the in-stock products we track rate limited at Nexgen Peptides and broad at Peptide Works. 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.
Nexgen Peptides is a US research-peptide vendor based in Fullerton, CA that lists 87 injectable peptides, 3 capsules and 2 tablets.
- Price vs market median
- 1% below market
- Tracked catalog
- 59 products · $$
- Cheaper on
- 20 of 39 shared
- COA coverage
- Limited
Peptide Works is a research-peptide vendor that lists 89 injectable peptides, including Melanotan II, PT-141 and Selank.
- Price vs market median
- 15% below market
- Tracked catalog
- 54 products · $
- Cheaper on
- 17 of 39 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 Nexgen Peptides and Peptide Works 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 Nexgen Peptides
20 products the other vendor does not list
- Tirzepatide$1.55
- Cagrilintide$9.70
- Cardiogen$2.20
- Chonluten$2.70
- Cortagen$2.70
- Dihexa$2.45
- L-Carnitine$0.07
- Livagen$3.15
Only at Peptide Works
15 products the other vendor does not list
- ACE-031$116.79
- Adamax$10.93
- B7-33$9.72
- CJC-1295 (with DAC)$10.72
- Follistatin$107.43
- GDF-8 (Myostatin)$106.82
- GHRP-2$2.40
- GHRP-6$2.40
Prices shown are per mg for the cheapest in-stock listing we track.
Questions
- Is Nexgen Peptides cheaper than Peptide Works?
- On the 39 products both vendors stock, Nexgen Peptides has the lower effective price per mg on 20 and Peptide Works on 17, 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?
- Nexgen Peptides: limited, newest test dated 2026-08-30. Peptide Works: broad, newest test dated 2025-09-21. 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 Nexgen Peptides and Peptide Works?
- Nexgen Peptides: ships from US. Peptide Works: accepts card, zelle, wire, crypto. Details come from each vendor's own site and can change without notice; check the storefront before ordering.