In a 2005 appeal, a panel composed by the international Court of Arbitration for Sport found that Testis compositum couldn't be proven to possess prohibited substances.
The sudden scrutiny on the properties of the product called Testis compositum came a day after a spokeswoman for Mr. Pistorius named it publicly for the first time.
The spokeswoman said Testis compositum is "used in aid of muscle recovery" and was found by police in the athlete's home as they investigated the Feb. 14 killing of his girlfriend, Reeva Steenkamp.