Original reference · reviewed July 2, 2026
Which Peptides Are Banned in Sports?
A physician-reviewed reference of 25 peptides and related substances mapped to the WADA Prohibited List 2026 (effective January 1, 2026)— prohibited, monitored, or not listed — with the WADA category and the reason for each. Because “is BPC-157 banned?” and “are GLP-1s allowed in competition?” deserve one clear answer.
For any athlete under anti-doping rules, “is this peptide banned?” is a career question — and the answers online are often wrong or out of date. This page maps the peptides people actually ask about to the current WADA Prohibited List, with the category code and a plain reason on every row. Of the 25 substances below, 16 are prohibited at all times and 6 are not currently on the list.
Two distinctions matter and are widely confused. First, sport status is not the same as legal or FDA status — for the U.S. regulatory picture, see our Peptide Regulatory Status Tracker, and for what actually counts as a peptide, see Is It a Peptide?. Second, “monitored” is not “banned”: WADA watches some substances (including the GLP-1 drugs) without prohibiting them.
The Reference — Every Substance, One Status
Status reflects the WADA Prohibited List 2026 (effective January 1, 2026) and the 2026 Monitoring Program, read from the official WADA documents and verified July 2, 2026. WADA revises the list every year and can capture substances by analogue clauses — always confirm the current status for the athlete’s sport and country via Global DRO before use.
“Not currently prohibited” means the substance was not found in the 2026 Prohibited List or Monitoring Program at the time of review; it is not an endorsement, and status can change. “By category, not named” means the status rests on a WADA category definition (such as the S0 non-approved catch-all) rather than a named entry.
How WADA Categorizes Peptides
Most performance peptides land in category S2 — Peptide Hormones, Growth Factors, Related Substances, and Mimetics, which is prohibited at all times. S2 covers growth hormone and its releasing factors (GHRH analogues like CJC-1295, sermorelin, tesamorelin), growth-hormone secretagogues and ghrelin mimetics (ipamorelin, ibutamoren, the GHRPs), growth factors (IGF-1, TB-500), and testosterone-stimulating peptides (kisspeptin). Erythropoietin sits in S2 as well.
Experimental peptides that no health authority has approved — such as BPC-157 and melanotan-II — are caught by category S0 (non-approved substances), also prohibited at all times. A few metabolic peptides (MOTS-c) sit under S4. The GLP-1 drugs are handled differently: they are on the Monitoring Program, watched but not prohibited.
Common “Is It Banned?” Questions
Is BPC-157 banned by WADA?
Yes. BPC-157 is named as an example under category S0 (non-approved substances) of the WADA Prohibited List 2026, which means it is prohibited at all times — in and out of competition. Older claims online that BPC-157 was "delisted" are incorrect for the current list. Any athlete subject to anti-doping rules who uses BPC-157 risks a violation.
Is TB-500 a banned substance in sport?
Yes. TB-500 (a thymosin beta-4 derivative) is named under category S2 of the WADA Prohibited List as a growth factor and is prohibited at all times.
Are GLP-1 drugs like semaglutide and tirzepatide allowed in competition?
They are not prohibited. Semaglutide and tirzepatide are on the WADA 2026 Monitoring Program, which means WADA tracks usage patterns but the substances carry no sanction. Liraglutide is not even monitored. This is a different status from prohibition — monitored is not banned.
Why are growth-hormone peptides like CJC-1295 and ipamorelin prohibited?
They fall under category S2 (Peptide Hormones, Growth Factors, Related Substances, and Mimetics). WADA prohibits growth-hormone-releasing hormones and their analogues (such as CJC-1295, sermorelin, and tesamorelin) and growth-hormone secretagogues / ghrelin mimetics (such as ipamorelin and ibutamoren) because they raise the body's own growth hormone. They are prohibited at all times.
Does being FDA-approved mean a peptide is allowed in sport?
No — these are separate systems. Tesamorelin (Egrifta) is an FDA-approved drug but is still prohibited under WADA S2. Conversely, an unapproved substance like melanotan-II is prohibited under the S0 catch-all precisely because no health authority approved it. FDA approval and WADA status must be checked independently.
Is thymosin alpha-1 banned?
Its status is not clearly defined. The WADA list names only thymosin beta-4 (TB-500), not thymosin alpha-1, which is a different molecule (an immunomodulator) and is an approved drug in some countries. Because it is neither clearly named under S2 nor obviously captured by the S0 catch-all, an athlete should confirm the current status through Global DRO or their anti-doping organization rather than assume it is permitted.
Is this the same as whether a peptide is legal or FDA-approved?
No. This page is only about sport anti-doping eligibility under WADA. For U.S. regulatory status — FDA approval and compounding categories — see our separate Peptide Regulatory Status Tracker. A peptide can be permitted in sport but not FDA-approved, or FDA-approved but prohibited in sport.
Primary Sources
- WADA — The Prohibited List 2026 (World Anti-Doping Code, International Standard).
- WADA — 2026 Monitoring Program (substances monitored, not prohibited).
- USADA — Peptide Hormones and the Prohibited List (educational primary source).
- Global DRO — check the status of a specific substance for a sport and country.
Reviewed by Dr. Charles Kamen, MD — LiveNow Longevity, Las Vegas. This reference is about sport anti-doping eligibility, not medical or legal advice, and it contains no doses. Athletes must verify current status with their anti-doping organization before using any substance.
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