LGD-4033 vs Ostarine
Side by side: what studies show, whether it is legal, doping and risks. No winner is shown on purpose.
| LGD-4033 | Ostarine | |
|---|---|---|
| Type | A SARM still being studied. No such medicine exists, and the Polish sanitary inspectorate lists it as not allowed in supplements. | A SARM still being studied. It raised body mass without fat in older people and cancer patients, with no clear gain in fitness in the largest studies. No such medicine exists, and products sold online are often mislabelled. |
| Stage | Still being studied | Still being studied |
| Is it legal (PL) | No approval. No approval found. The Polish sanitary inspectorate lists SARMs as not allowed in food supplements. | No approval. No approval. The Polish sanitary inspectorate lists ostarine, ligandrol and other SARMs as not allowed in food supplements. |
| Is it legal (EU) | No approval. The European medicines database (EMA), which covers EU and national approvals, lists no such medicine (9 October 2026). | No approval. The European medicines database (EMA), which covers EU and national approvals, lists no such medicine (9 October 2026). |
| Is it legal (US) | No approval. The FDA drug register has no such medicine. | No approval. Not approved. FDA treats bodybuilding products containing SARMs as unapproved drugs. |
| Doping | Banned in sport, WADA 2026 | Banned in sport, WADA 2026 |
| Safety | Serious warning | Serious warning |
| Risk of fakes | High | High |
| Muscle mass | B Effect in studies. One 21-day study of 76 healthy men. Body mass without fat rose and fat did not change. We found nothing longer. | B Effect in studies. Body mass without fat rose in early and in the largest studies, but only in older adults and cancer patients. The maker paid for the studies. |
| Strength | – | C Conflicting results. Physical function improved in an early study, while the two largest studies went in opposite directions. Top strength was not what they tested. |