Some bodybuilders and athletes use trenbolone esters for their muscle-building and otherwise performance-enhancing effects.  Such use is illegal in the United States and many other countries. The DEA classifies trenbolone and its esters as Schedule III controlled substances under the Controlled Substances Act .  Trenbolone is classified as a Schedule 4 drug in Canada  and a class C drug with no penalty for personal use or possession in the United Kingdom .  Use or possession of steroids without a prescription is a crime in Australia .  The infamous "duchess" cocktail allegedly administered to Russian athletes at the Sochi Winter Olympics consisted of oxandrolone , a metenolone ester, and a trenbolone ester. 
Akhtar made a successful return to cricket in his first game in the Indian Premier League , playing for the Kolkata Knight Riders against the Delhi Daredevils . Defending a low score of 133 runs, Akhtar took four top order wickets which ultimately led to the Daredevils being restricted to 110 runs. He ended with figures of 4 wickets for 11 runs from three overs, a performance which earned him the player of the match award.   Akhtar denied that he had any point to prove with his performance, stating, "I just wanted to win the game." Knight Riders' captain Sourav Ganguly also acknowledged Akhtar's performance, "He came to the country with lots [of things] happening behind him...But he showed a lot of character."  It has been widely reported that the Knight Riders have released Akhtar from his contract due to his injury history but the Knight Riders' officials have denied these reports and said they are still in talks with the fast bowler.