Angels right-hander Luis Pena was suspended for 50 games on Wednesday after testing positive for a banned anabolic steroid.
The Office of the Commissioner of Baseball said Pena, who has yet to pitch in the Minors for Los Angeles, received a 50-game suspension without pay after testing positive for metabolites of boldenone, a performance-enhancing substance in violation of the Minor League Drug Prevention and Treatment Program.
The suspension of Pena will be effective at the start of the Dominican Summer League season.
Pena, 18, is a 5-foot-11 right-hander from Bonao, Dominican Republic. He's the 18th player to be suspended by Major League Baseball in 2014 for violating the Minor League drug program.
Boldenone, more commonly known and marketed as Equipoise, is an anabolic steroid developed for veterinary use, primarily to treat horses. Side effects include increased muscle growth, red blood cell counts and appetite. Pena is the first player to test positive for the substance since Moises Bello of the Tigers was flagged for using it on Aug. 29, 2013.