Modern Aminos vs peptira
Across the 26 products both vendors stock, Modern Aminos has the lower effective price per mg on 15 and peptira on 10, and 1 prices the same to the cent. Modern Aminos lists 61 tracked listings across 34 products; peptira lists 61 across 40. On certificates of analysis the in-stock products we track rate broad at Modern Aminos and partial at peptira. 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.
Modern Aminos is a US research-peptide vendor based in Garden City, Idaho that lists 46 injectable peptides.
- Price vs market median
- 2% below market
- Tracked catalog
- 34 products · $$
- Cheaper on
- 15 of 26 shared
- COA coverage
- Broad
peptira is a US research-peptide vendor based in Chadron, NE that lists 51 injectable peptides, including TB-500, SS-31 and FOXO4-DRI.
- Price vs market median
- 6% above market
- Tracked catalog
- 40 products · $$$
- Cheaper on
- 10 of 26 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 Modern Aminos and peptira 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 Modern Aminos
8 products the other vendor does not list
- Pinealon$3.05
- Dihexa$18.80
- Hexarelin$6.80
- MK-677$3.56
- Ovagen$2.70
- Sermorelin$7.40
- SLU-PP-332$27.80
- Vesugen$2.70
Only at peptira
14 products the other vendor does not list
- FOXO4-DRI$16.60
- NAD+$0.11
- Retatrutide$5.97
- Selank$4.90
- Semax$4.90
- SS-31$2.78
- Tirzepatide$3.32
- Adamax$6.90
Prices shown are per mg for the cheapest in-stock listing we track.
Questions
- Is Modern Aminos cheaper than peptira?
- On the 26 products both vendors stock, Modern Aminos has the lower effective price per mg on 15 and peptira on 10, with 1 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?
- Modern Aminos: broad, newest test dated 2026-08-27. peptira: partial, newest test dated 2026-07-03. 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 Modern Aminos and peptira?
- Modern Aminos: ships from Garden City, Idaho, 2-5 days in transit, accepts card, ach, crypto. peptira: we have not recorded shipping or payment details yet. Details come from each vendor's own site and can change without notice; check the storefront before ordering.