Vendors carrying P21. In-stock options first, sorted by price per milligram.
Methodology: how we rank.
| Rank | Vendor | Price | Per mg | Verified | Stock |
|---|---|---|---|---|---|
| #1 | $116.00 | $23.20 | — | In stock |
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✓ marks vendors with at least one independent third-party purity test for this peptide, aggregated from Finnrick Analytics. An em-dash means we have no third-party test on file — not that the product is untested.
Vial sizes vary across vendors. A 10mg vial at $90 is cheaper per milligram than a 5mg vial at $50. We normalize all listings to dollars per milligram so comparisons are apples-to-apples.