Kamila Valieva February 10, 2022 12:02 am What is Trimetazidine? NBC Sports reported that Russian figure skater Kamila Valieva tested positive for trimetazidine, a banned substance. What is trimetazidine and have athletes been caught using it before? US & World Videos 0:54 Russian figure skater Valieva disqualified from 2022 Olympics for doping