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Report: Meldonium positive tests have reached 100

The number of positive tests for Meldonium, the banned substance that tennis star Maria Sharapova tested positive for, has reached 100.

The number of positive tests among athletes for Meldonium, the banned substance for which tennis star Maria Sharapova recently tested positive, has reached 100, the World Anti-Doping Agency toldUSA Today.

Names of the 100 athletes have not been revealed. Sharapova is among several elite athletes that have tested positive in recent weeks. Others include Swedish distance runner and 2013 world champion Abeba Aregawi, Russian cyclist Eduard Vorganov and Ukrainian biathlete Olga Abramova.

The drug was added to the World Anti-Doping Agency's list of banned substances on Jan. 1, 2016.

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Meldonium, sometimes known as Mildronate, is not approved by the United States' Food and Drug Administration. WADA classifies the drug as an S4 substance which focuses on hormone and metabolic modulators. 

The drug is developed in Latvia and can be used to treat a number of heart conditions, including angina. Athletes have found that the substance can also increase the body’s oxygen uptake to aid endurance.

- Christopher Chavez