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Is Tirzepatide Legal? FDA, Compounding and WADA Status

Tirzepatide's FDA status, compounding rules and anti-doping status, with a dated timeline of every change we track.

Medically reviewed by Juan Pablo Frías, MD · · DisclosureGLP-1 / GIP dual agonistUpdated
FDA status
Approved (Mounjaro, Zepbound)
PCAC vote
Not reviewed
not on the Jul 2026 PCAC agenda
WADA
Not listed
2026 Prohibited List
Not legal adviceStatus reflects public FDA and WADA records on the date shown. Rules differ by country and state.

Current status

FDA approved (Mounjaro, Zepbound)

Tirzepatide is FDA approved (Mounjaro, Zepbound). Products sold as research chemicals are not the approved drug and are not checked by the FDA.

Tirzepatide: regulatory status by country
CountryStatusSource
United StatesApprovedApproved by FDA as Mounjaro (original approval 13 May 2022) and Zepbound (original approval 8 Nov 2023), both tirzepatide, Eli Lilly. Mounjaro is indicated for type 2 diabetes; Zepbound for chronic weight management and obstructive sleep apnea (see label quotes).api.fda.govchecked 2 Oct 2026

Timeline

  1. FDA warning letters to five research-peptide sellersEnforcement
  2. FDA proposes excluding semaglutide, tirzepatide and liraglutide from the 503B bulks listFDA
  3. Seven FDA warning letters to online sellers of GLP-1 productsEnforcement
Every peptide on the FDA tracker

Compounding and research-use sellers

  • Category 2 is the FDA's list of bulk substances it flagged as raising significant safety concerns. Compounding pharmacies are not expected to compound from them while they are on it.
  • The Pharmacy Compounding Advisory Committee (PCAC) advises the FDA on which substances belong on the 503A bulks list that pharmacies may compound from. Its votes are advice; the FDA decides.
  • "Research use only" products are sold outside these rules and are not checked by the FDA for identity, purity or dose.

Sport and drug testing

Not on the WADA Prohibited List

GLP-1 and GIP agonists are not named anywhere on the 2026 list. This one is an approved medicine, so the catch-all S0 (which only covers drugs with no approval anywhere) does not apply to it.

Outside the US

Rules differ by country. What each regulator's own records show, with the date we checked:

Tirzepatide: regulatory status by country
CountryStatusSource
United KingdomApprovedListed on emc as Mounjaro KwikPen (tirzepatide), Eli Lilly and Company Limited.medicines.org.ukchecked 2 Oct 2026
CanadaApprovedHealth Canada DPD lists Mounjaro (tirzepatide) as Marketed; Zepbound also marketed.health-products.canada.cachecked 2 Oct 2026
AustraliaApprovedRegistered in the ARTG (TGA search for "tirzepatide" on 2 Oct 2026).tga.gov.auchecked 2 Oct 2026
European UnionApprovedCentrally authorised in the EU as Mounjaro (tirzepatide).ema.europa.euchecked 2 Oct 2026

Common questions

Is Tirzepatide FDA approved?

Tirzepatide is FDA approved (Mounjaro, Zepbound). Products sold as research chemicals are not the approved drug and are not checked by the FDA.

Is Tirzepatide legal to buy?

As an approved drug it requires a prescription in the US. Products sold online as research chemicals "not for human use" are not the approved drug.

Is Tirzepatide banned by WADA?

No. GLP-1 and GIP agonists are not named anywhere on the 2026 list. This one is an approved medicine, so the catch-all S0 (which only covers drugs with no approval anywhere) does not apply to it.

More on Tirzepatide

DosageDoses used in published studies, with the source for each.CalculatorVial, water and dose to syringe units.Side effectsWhat labels and studies report, and what is unknown.ResultsStudy outcomes and when they were measured.PricePrice per mg and per week from dated listings. No vendor links.How to injectSites, syringe types and hygiene, step by step.

Sources

  1. 1World Anti-Doping Code International Standard Prohibited List 2026World Anti-Doping Agency · 2026wada-ama.orgAccessed 2 Oct 2026
  2. 2United States: Approved by FDA as Mounjaro (original approval 13 May 2022) and Zepbound (original approval 8 Nov 2023), both tirzepatide, Eli Lilly. Mounjaro is indicated for type 2 diabetes; Zepbound for chronic weight management and obstructive sleep apnea (see label quotes).U.S. Food and Drug Administration · 2026api.fda.govAccessed 2 Oct 2026
  3. 3United Kingdom: Listed on emc as Mounjaro KwikPen (tirzepatide), Eli Lilly and Company Limited.Electronic Medicines Compendium (UK) · 2026medicines.org.ukAccessed 2 Oct 2026
  4. 4Canada: Health Canada DPD lists Mounjaro (tirzepatide) as Marketed; Zepbound also marketed.Health Canada · 2026health-products.canada.caAccessed 2 Oct 2026
  5. 5Australia: Registered in the ARTG (TGA search for "tirzepatide" on 2 Oct 2026).Therapeutic Goods Administration (Australia) · 2026tga.gov.auAccessed 2 Oct 2026
  6. 6European Union: Centrally authorised in the EU as Mounjaro (tirzepatide).European Medicines Agency · 2026ema.europa.euAccessed 2 Oct 2026
  7. 7FDA warning letters to five research-peptide sellersFDA warning letter (NuScience Peptides; 1 of 5) · 2026fda.govAccessed 2 Oct 2026
  8. 8FDA proposes excluding semaglutide, tirzepatide and liraglutide from the 503B bulks listFDA · 2026fda.govAccessed 2 Oct 2026
  9. 9Seven FDA warning letters to online sellers of GLP-1 productsFDA warning letter (Gram Peptides; 1 of 7) · 2026fda.govAccessed 2 Oct 2026

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