Maria Sharapova tested positive for a pharmaceutical.
Maria Sharapova . In March 2016 , Sharapova revealed she had failed a drug test at the 2016 Australian Open on January 26 , 2016 . She had tested positive for meldonium , a substance that had been banned , effective January 1 , 2016 by the World Anti-Doping Agency ( WADA ) . Meldonium ( INN ) , trade-named as Mildronate among others , is a limited-market pharmaceutical , developed in 1970 by Ivars Kalviņš , Latvian Institute of Organic Synthesis ( USSR ) , and manufactured primarily by Grindeks of Latvia and several generic manufacturers .