Peptide Works vs Swiss Chems
Across the 27 products both vendors stock, Peptide Works has the lower effective price per mg on 24 and Swiss Chems on 3. Peptide Works lists 92 tracked listings across 51 products; Swiss Chems lists 42 across 29. On certificates of analysis the in-stock products we track rate broad at Peptide Works and partial at Swiss Chems. 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 Works is a research-peptide vendor that lists 84 injectable peptides, including PT-141, Melanotan II and GHK-Cu.
- Price vs market median
- 21% below market
- Tracked catalog
- 51 products · $
- Cheaper on
- 24 of 27 shared
- COA coverage
- Broad
Swiss Chems is a US research-peptide vendor that lists 31 injectable peptides and 2 blends, including Epitalon, TB-500 and Melanotan II.
- Price vs market median
- 7% below market
- Tracked catalog
- 29 products · $
- Cheaper on
- 3 of 27 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 Peptide Works and Swiss Chems 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
Prices shown are per mg for the cheapest in-stock listing we track.
Questions
- Is Peptide Works cheaper than Swiss Chems?
- On the 27 products both vendors stock, Peptide Works has the lower effective price per mg on 24 and Swiss Chems on 3. 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 Works: broad, newest test dated 2025-09-21. Swiss Chems: partial, newest test dated 2026-10-02. 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 Works and Swiss Chems?
- Peptide Works: accepts card, zelle, wire, crypto. Swiss Chems: 3-5 days in transit, accepts card, zelle, ach, crypto. Details come from each vendor's own site and can change without notice; check the storefront before ordering.