Five-time Grand Slam winner Maria Sharapova called a press conference in Los Angeles on Monday to announce that she failed a drug test at the Australian Open.
No announcement was made in regards to a potential ban from the sport.
"I made a huge mistake, I let my sport down," Sharapova said. "I hope I will be given another chance to play this game."
"It made me healthy and that's why I continued to take it," Sharapova said of her use of Meldonium.
The 28-year-old Russian tennis star pulled out of Indian Wells last week, citing a left forearm injury that had been bothering her all season. The same injury sidelined her for the Brisbane International, and a knee injury forced her to miss the US Open.
The world No. 7 has played in just three tournaments since last year's Wimbledon.