Clenbuterol

Shahzad's sample was tested and found to contain clenbuterol, a non-specified substance by WADA and is prohibited both in-competition and out-of-competition.

Nour-Aldin al-Kurdi, the fifth athlete to be expelled for doping, tested positive for clenbuterol, which is widely used to build muscle bulk.

Mexican football authorities say the five players dropped from its Gold Cup squad after testing positive for clenbuterol have now tested negative for the banned substance.

The IOC's top anti-doping official said he has seen no convincing evidence that athletes can inadvertently test positive for clenbuterol or other banned drugs by eating contaminated meat.

Polish canoeist Adam Seroczynski was banned on Friday for two years for doping with the banned anabolic agent clenbuterol at the Beijing Olympics.

Shahzad's sample was tested and found to contain clenbuterol, a non-specified substance by WADA and is prohibited both in-competition and out-of-competition.

Nour-Aldin al-Kurdi, the fifth athlete to be expelled for doping, tested positive for clenbuterol, which is widely used to build muscle bulk.

Mexican football authorities say the five players dropped from its Gold Cup squad after testing positive for clenbuterol have now tested negative for the banned substance.

The IOC's top anti-doping official said he has seen no convincing evidence that athletes can inadvertently test positive for clenbuterol or other banned drugs by eating contaminated meat.

Polish canoeist Adam Seroczynski was banned on Friday for two years for doping with the banned anabolic agent clenbuterol at the Beijing Olympics.