Is GDF15 legal in the United States?

GDF15 is a stress signal your body makes when cells are in trouble. It acts on the part of the brain that makes you feel sick and turn away from food. In 187 people with cancer who were wasting away, a drug that blocks it helped them gain 1.2 to 2.8 kg more than a dummy shot. A drug that boosts it, given to 126 adults with obesity, caused very little weight loss.

GDF15 is a stress signal. Your body makes more of it when cells are under strain.

How it works: In people, GDF15 goes up when cells are under almost any kind of stress. It runs high in people with cancer who are wasting away.

Approval history: Not FDA-approved. No drug that mimics or blocks GDF15 is listed in the FDA drug database (Drugs@FDA) as of 11 September 2026. Ponsegromab, an antibody that blocks GDF15, is in combined mid-stage and final-stage studies for cancer cachexia, the weight and muscle loss that comes with cancer. MBL949, a drug that mimics GDF15, caused very little weight loss in a 2025 mid-stage study.

Approves prescription drugs, each for a named use. It also acts against unapproved products, including peptides sold online. Compounding pharmacies, which mix drugs to order, may make some compounds with a prescription. That only applies when the FDA puts the compound in a category of bulk ingredients it allows.

The legal category above is how The Longevity Archive reads U.S. Food and Drug Administration listings for GDF15 on the reviewed date. It is not a legal opinion. Rules change. Bringing a compound into the country, prescribing it and owning it can each be treated differently. Check with the agency before you act on anything here.

Check FDA directly

Whether GDF15 is banned in sport is set by the World Anti-Doping Code and by military rules, not by its legal status in the United States. Before you compete or get tested, look up GDF15 by name on the Prohibited List, or look up a named product in Global DRO. Under the World Anti-Doping Code, category S0 bans, at all times, any drug-like substance that meets two tests. No other section of the List covers it. And no government health regulator anywhere has a current approval for it as a treatment in people. Many substances that are approved somewhere are banned by name in another section. So approval does not mean a substance is allowed in sport.

• WADA Prohibited List
• Global DRO (check a named product)
• USADA (US athletes)
• Operation Supplement Safety (US service members)

The rules you compete or serve under decide this, not this page.