Multiple reports allege that Conor McGregor took “powerful” drugs that would be banned in UFC settings and attempted to avoid anti-doping officials after a serious leg injury. The claims are linked to the period following McGregor’s treatment for a complex fracture of the tibia and fibula, which the reports describe as shattered and involving complications. One report also ties the allegation to McGregor’s association with a surgeon associated with actor Leonardo DiCaprio, who is described as having treated or repaired McGregor’s leg. The reports do not provide verifiable details of the specific substances involved, but they assert that McGregor sought to evade anti-doping scrutiny. No confirmed outcome from any testing authority is stated in the supplied text. The information presented is framed as allegations rather than established findings, and the reports emphasize that the accusations follow his injury and subsequent medical care.