The World Anti-Doping Agency (WADA) has issued a Clarification

The World Anti-Doping Agency (WADA) has issued a clarification notice on the prohibition of meldonium and how positive cases should be prosecuted, following a number of failed tests for the drug since its appearance on the Prohibited list since January 1st. 

Athletes who have tested positive for the drug, including five-time Grand Slam winner Maria Sharapova, have now been offered a potential lifeline, given that WADA has admitted that there is "limited data available on excretion studies relating to meldonium". 

WADA's clarification Notice now states that such athletes could face limited to no punishment if below one microgram of meldonium was detected and if the failed test happened before March 1.