Wada said the once developmental drug, identified as GW501516,
had been bought and used by some athletes despite being withdrawn from research
and terminated when "serious toxicities were discovered in pre-clinical
Side effect of the chemical
The side effect of this chemical compound is so serious that
WADA is taking the rare step of warning 'cheats' to ensure that there is
complete awareness of the possible health risks to athletes who succumb to the
temptation of using GW501516 for performance enhancement," WADA added in a
statement. It said the drug did not have, and would not get, clinical
However, GW501516 has been available for some months on the
black market, through the Internet and elsewhere.
Anti-Doping authorities have already seen its use by
athletes, as there are a number of positive cases."WADA did not specify which
athletes had tested positive for the substance but urged federations to notify
athletes "as soon as possible."