The first big doping case at the Beijing Olympics involves one of its biggest stars. Here’s a look at the drug that Kamila Valieva of the Russia Olympic Committee — the name under which Russia is competing because of previous doping violations — is suspected of taking, and how the situation might play out in coming days. The medication trimetazidine is a metabolic agent that helps prevent angina attacks and treats the symptoms of vertigo, according to the European Union’s medicines agency.
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