Every tracked vendor for P21, ranked by real cost-per-milligram. Cheapest right now: $6.04/mg at Umbrella Labs.
$/mg = price ÷ vial size. Prices collected periodically — confirm on the vendor's site. Some links are affiliate links.
Across 7 tracked vendors, P21 ranges from $6.04/mg to $23/mg, averaging $12/mg. The cheapest listing right now is Umbrella Labs at $151 for a 25mg vial.
The lowest P21 price is $6.04 per mg at Umbrella Labs, about 52% below the 7-vendor average. Cost-per-mg (price ÷ vial size) is the fair way to compare vials of different sizes.
P21 is listed by 7 research-peptide vendors we track, including Umbrella Labs, Limitless Wholesale, PureRawz. Compare every price by cost-per-mg on this page and buy direct from the vendor. Some links are affiliate links.
P21 is sold for research and laboratory use only and is not approved for human consumption. Legality varies by country and jurisdiction. This page is informational, not medical or legal advice — confirm your local regulations and consult a qualified professional.