UFC middleweight contender Yoel Romero will only have to serve a six-month suspension for a failed drug test that was triggered by what he is claiming was tainted supplements. Romero agreed to the suspension which is retroactive to January 12. He is eligible to return to action sometime this summer.

Romero tested positive for a growth hormone during his out of competition testing but was not notified of his failure until after his bout against Jacare Souza at UFC 194. According to the Nevada State Athletic Commission the hormone was not present in Romero’s body during the fight night testing.

Reports state that a tainted dietary supplement lead to Romero failing the drug test. The supplement was said to contain traces of Ibutamoren and did not disclose it on their label. The supplement has been placed on “high risk” list according to the U.S. Anti-Doping Agency.

Prior to the announcement of his positive drug test, Romero (11-1) was on the fast track to a shot at the middleweight title. He defeated Jacare Souza in a rather lackluster performance at UFC 194 but has TKO wins over Lyoto Machida, Tim Kennedy, and Derek Brunson. He is also undefeated in the UFC having a perfect 7-0 record.