Popular with upper body strength athletes such as weightlifters and throwers, this is a synthetic testosterone that increases muscle and strength.

Made famous by the disqualification of Ben Johnson in 1988, although popular with many weightlifters in recent years such as Bulgarian Anguel Anguelov Guenchev who set 3 world records in winning his 148 1/2-pound class before being expelled. Picture shows a weightlifter in Athens in 2004 Image credit: Vladimir Rys/Bongarts/Getty Images