Ion Peptide vs Modern Research Peptides
Across the 29 products both vendors stock, Ion Peptide has the lower effective price per mg on 9 and Modern Research Peptides on 18, and 2 price the same to the cent. Ion Peptide lists 105 tracked listings across 36 products; Modern Research Peptides lists 83 across 44. On certificates of analysis the in-stock products we track rate partial at Ion Peptide and broad at Modern Research Peptides. 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.
Ion Peptide is a US research-peptide vendor that lists 65 injectable peptides and 1 blend, including Tirzepatide, FOXO4-DRI and Retatrutide.
- Price vs market median
- 26% below market
- Tracked catalog
- 36 products · $
- Cheaper on
- 9 of 29 shared
- COA coverage
- Partial
Modern Research Peptides is a US research-peptide vendor that lists 79 injectable peptides, including NAD+, BPC-157 and Retatrutide.
- Price vs market median
- 31% below market
- Tracked catalog
- 44 products · $
- Cheaper on
- 18 of 29 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 Ion Peptide and Modern Research Peptides 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 Ion Peptide
7 products the other vendor does not list
- FOXO4-DRI$10.12
- Adamax$6.38
- AICAR$1
- CJC-1295 (with DAC)$10.03
- IGF-LR3$76.50
- SLU-PP-332$6.63
- Tesamorelin + Ipamorelin$6.47
Only at Modern Research Peptides
15 products the other vendor does not list
- 5-Amino-1MQ$0.98
- BPC-157$2.37
- CJC-1295 (no DAC)$5
- Epitalon$3.30
- GHK-Cu$0.40
- MOTS-c$1.73
- Semax$3.50
- TB-500$4.70
Prices shown are per mg for the cheapest in-stock listing we track.
Questions
- Is Ion Peptide cheaper than Modern Research Peptides?
- On the 29 products both vendors stock, Ion Peptide has the lower effective price per mg on 9 and Modern Research Peptides on 18, 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?
- Ion Peptide: partial, newest test dated 2026-05-19. Modern Research Peptides: broad, newest test dated 2026-07-13. 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 Ion Peptide and Modern Research Peptides?
- Ion Peptide: ships from US. Modern Research Peptides: shipping $9.99. Details come from each vendor's own site and can change without notice; check the storefront before ordering.