Brock Lesnar failed two drug tests prior to his win over Mark Hunt at UFC 200 on July 9 in Las Vegas. Both failed tests were for the same banned substance.
USADA, the testing agency responsible for administering the tests, did not publicly announce the substance for which Lesnar failed his exam. However, two reporters are saying Lesnar was flagged for clomiphene.
I'm told by an official with knowledge of Brock Lesnar's positive test that the substance is clomiphene, the same one found in @JonnyBones.
— Lance Pugmire (@latimespugmire) July 19, 2016
According to sources, Brock Lesnar tested positive for Clomiphene, the same anti-estrogen blocker Jon Jones tested positive for.
— Brett Okamoto (@bokamotoESPN) July 19, 2016
As Okamoto noted, clomiphene is the same substance Jon Jones tested positive for in his failed out-of-competition drug test prior to UFC 200. Clomiphene is an estrogen blocker and increases testosterone levels.
