LOS ANGELES -- Manny Ramirez joined a growing lineup of All-Stars linked to drugs Thursday, with the dreadlocked slugger banished for 50 games by a sport that cannot shake free from scandal.

The Los Angeles Dodgers star said he did not take steroids and was prescribed medication by a doctor that contained a banned substance.

"It's a dark day for baseball and certainly for this organization," Dodgers general manager Ned Colletti told reporters on the field at Dodger Stadium. "This organization will never condone anything that isn't clean."

The commissioner's office didn't announce the specific violation by the 36-year-old outfielder, who apologized to the Dodgers and fans for "this whole situation."

However, testing by Major League Baseball showed that Ramirez had testosterone in his body that was not natural and came from an artificial source, two people with knowledge of the case told ESPN's Mark Fainaru-Wada and T.J. Quinn. The sources said that in addition to the artificial testosterone, Ramirez was identified as using the female fertility drug human chorionic gonadotropin, or hCG.

The sources said Ramirez was suspended for using hCG because baseball had documentation to prove his use of the drug. A Major League Baseball source said Ramirez's representatives indicated they would fight a suspension for using artificial testosterone.

Ramirez, in a statement issued by the players' union, said: "Recently, I saw a physician for a personal health issue. He gave me a medication, not a steroid, which he thought was OK to give me.