Nootropics · price comparison
Where to Buy P-21: Cheapest Vendor in 2026
P-21 pricing across every research peptide vendor we track, ranked by price per mg. Prices change often, so check the vendor before you buy. The cheapest source we track is Disguised Alpha at $6.00/mg.
P-21 vendor ranking: cheapest first
Research profile
Mechanism, dosing, half-life, peer-reviewed studies for P-21.
Coupon codes
Every active vendor coupon for P-21, click-to-copy.
Reconstitution calculator
Vial size + BAC water → concentration, syringe units, doses per vial.
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What is P-21?
P-21 (also written P021, or Peptide 021) is a synthetic peptidergic compound derived from the neurotrophic region of ciliary neurotrophic factor (CNTF), designed to activate neurogenic and BDNF-producing pathways in the adult brain without triggering the activation of the CNTF receptor that causes the undesirable side effects (cachexia, muscle wasting) that limited CNTF itself as a therapeutic. T… Read the full P-21 research profile
Buying P-21: FAQ
Where can I buy P-21 online?
P-21 has 1 in-stock listing from research peptide vendors tracked on BodyHackGuide. The cheapest current price per mg is Disguised Alpha at $6.00/mg. Tap any "Buy" button on this page to go directly to the vendor's product page.
What's the cheapest price for P-21?
The lowest price per mg we track comes from Disguised Alpha at $6.00/mg ($59.99 for 10mg). Prices change often, so check the vendor before you buy.
Is buying P-21 online safe?
Vendor safety varies. BodyHackGuide scores every vendor on a 0-100 Trust Score (COA verification, payment transparency, community feedback, shipping practices). This page ranks listings by price per mg, not by score, so check each vendor's score breakdown on its BodyHackGuide profile before you buy.
Do I need a prescription for P-21?
P-21 is sold for research-use-only by the vendors on this page; no prescription required for research purchases. None of these vendors sell P-21 for human consumption, and BodyHackGuide doesn't promote off-label use. Always consult a licensed practitioner before any compound enters a clinical context.
Affiliate disclosure. BodyHackGuide earns a commission on some of its links, at no additional cost to you. Vendor rankings are based on price per mg from the listings we track. We don't accept payment for editorial placement. See our full affiliate disclosure .
Free 2026 Peptide Cheat Sheet (PDF)
38 compounds and blends: vial sizes, BAC water volumes, dosing ranges and bloodwork markers.