Disclosure: We earn a commission from vendors on this page. Rankings are based on objective criteria including price, COA availability, and reputation.
Best FOXO4-DRI Vendors of 2026
Ranked by Price, Purity, and Reputation
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Quick Comparison
1Ascension PeptidesCOA
10/1010mg$16.00/mg
2Ion PeptideCOA
9.5/1010mg$11.90/mg
3Glacier AminosCOA
9/1010mg$13.50/mg
| Rank | Vendor | COA | Score | Doses |
|---|---|---|---|---|
| 1 | Ascension Peptides | Yes | 10/10 | |
| 2 | Ion Peptide | Yes | 9.5/10 | |
| 3 | Glacier Aminos | Yes | 9/10 |
Bulk Pricing
Per-vendor quantity breaks — pick a vial size to see the bulk price. Must purchase the full pack.
Ascension PeptidesCOA
as low as $7.20/mg$1440.0010mg × 10$14.40/mg → $7.20/mg auto-applied
View at Ascension PeptidesIon PeptideCOA15% code thepeptidecatalog
as low as $7.59/mg$892.5010mg × 10$8.93/mg → $7.59/mg with code
View at Ion PeptideGlacier AminosCOA10% code thepeptidecatalog
as low as $8.50/mg$1214.9010mg × 10$12.15/mg → $10.93/mg with code
View at Glacier AminosCompare More Peptide Vendors
How We Score Vendors
Our scoring is based on three weighted factors:
Price Competitiveness (40%)
Normalized to cost per milligram for fair comparisons across vial sizes.
COA Availability (30%)
Third-party lab testing confirming purity, identity, and absence of contaminants.
Vendor Reputation (30%)
Community feedback, shipping reliability, customer service, and business track record.