Dawn Harper-Nelson, an Olympic 100m hurdles gold and silver medalist, is serving a three-month ban after testing positive for a prohibited substance.
Harper-Nelson failed a drug test for the banned diuretic hydrochlorothiazide and related metabolites on Dec. 1, according to the U.S. Anti-Doping Agency:
Harper-Nelson’s explanation that her positive test was caused by a blood pressure medication she was prescribed by a physician to treat hypertension. Harper-Nelson further explained that she made efforts to determine if the medication contained prohibited substances; however, due to using partial search terms, those efforts were unsuccessful.