Peptide Referee

P21: research, legal status and who sells it

This page is information, not medical advice. P21 is not approved as a medicine in the markets below unless stated. We don't publish dosing or usage instructions.

Also known as
P021, Ac-DGGLAG-NH2
Category
Synthetic peptide compound derived from ciliary neurotrophic factor (CNTF)
Evidence level
Preclinical (lab and animal studies)
Price range
$5.00/mg to $24.00/mg, median $7.75/mg across 11 vendors (compare)
Our lab tests
None yet (how testing will work)
WhereStatus
United StatesNo FDA-approved drug contains P21 (P021) [1].
United KingdomNo UK-licensed medicine containing P21 (P021) appears in the MHRA products database [2].
European UnionNo medicine containing P21 (P021) is authorized in the EU, according to EMA's central and Article 57 product data [3][4].
CanadaNo product containing P21 (P021) appears in Health Canada's Drug Product Database [5].
AustraliaP21 (P021) is not named in Australia's Poisons Standard (October 2026) [6].
Sport (WADA)Not named on the 2026 Prohibited List; its section S0 bans any pharmacological substance with no current approval for human therapeutic use [7].
 Summaries of official sources, checked —. Rules change; follow the source links. Not legal advice.

We haven't published a full overview of P21 yet. The legal status table and live prices on this page are current.

P21 prices: cheapest listings

The five lowest $/mg listings out of 13. See all P21 prices

Vendor Transparency Product Size Price $/mg vs median Stock Vendor's page
Bulk Peptide Wholesale 45/100* P21 (P021) 10 mg (10 vials) 10 mg × 10 $500 $5.00/mg −35% In stock View
Evolve BioPep 83/100 P21 12mg 12 mg $70 $5.83/mg −25% In stock View
PurePeps 35/100* P21 (P021) 10MG 10 mg A$100 $7.01/mg* −9% In stock View
Bulk Peptide Supply 57/100* P21 (P021) 10 mg 10 mg $75 $7.50/mg −3% In stock View
Bulk Peptide Supply 57/100* P21 (P021) 10 mg (10 vials) 10 mg × 10 $750 $7.50/mg −3% In stock View

Prices come from each vendor's public product feed and were last fetched Oct 15, 2026. They exclude shipping and discounts. $/mg uses the labeled amount, not measured content. $/mg marked * was converted to US dollars from the listed currency at the European Central Bank reference rate. A transparency score marked * is based on fewer than six checks; checks we couldn't complete score 0. How we compare prices.

Sources

  1. Drugs@FDA: FDA-Approved Drugs (database searched by active ingredient). U.S. Food and Drug Administration. Accessed Oct 15, 2026
  2. MHRA Products: licensed-medicine search for "p021". Medicines and Healthcare products Regulatory Agency (UK). Accessed Oct 15, 2026
  3. EMA medicines data: centrally authorised human medicines (export of 14 October 2026). European Medicines Agency. Accessed Oct 15, 2026
  4. EMA Article 57 product data: medicines authorised in the EU/EEA (data as of 9 October 2026). European Medicines Agency. Accessed Oct 15, 2026
  5. Drug Product Database online query (searched by active ingredient). Health Canada. Accessed Oct 15, 2026
  6. Therapeutic Goods (Poisons Standard—October 2026) Instrument 2026 (F2026L01327, registered 30 September 2026). Federal Register of Legislation, Australian Government. Accessed Oct 15, 2026
  7. World Anti-Doping Code International Standard: Prohibited List 2026 (in force 1 January 2026). World Anti-Doping Agency. Accessed Oct 15, 2026
  8. Neurotrophic Treatment Initiated During Early Postnatal Development Prevents the Alzheimer-Like Behavior and Synaptic Dysfunction. Journal of Alzheimer's Disease (2021). Accessed Oct 15, 2026
  9. Alzheimer's Disease: Challenges and a Therapeutic Opportunity to Treat It with a Neurotrophic Compound. Biomolecules (2022). Accessed Oct 15, 2026