Conor McGregor accused of using banned drugs during 2021 leg injury recovery

Investigations reported by the New York Times claim that UFC star Conor McGregor used prohibited performance‑enhancing substances while healing a serious tibia and fibula fracture sustained in his 2021 loss to Dustin Poirier. Dr. Neal ElAttrache, a renowned sports physician, allegedly authored a letter supporting McGregor’s request for a therapeutic‑use exemption that would permit the use of such drugs without sanction.

USADA officials believe McGregor attempted to exploit a loophole by leaving the anti‑doping testing pool in 2022 and seeking the exemption, though no specific substances have been disclosed and the UFC has not confirmed any approval. McGregor is slated to return to the octagon in early July 2026 to face Max Holloway at UFC 329, reigniting debate over his past medical treatment and the integrity of anti‑doping protocols.