Anyone who isn't doping isn't in the Tour De France.
"Jacques Anquetil, a French cyclist who won the Tour de France five times in the 1950s and 1960s, openly admitted to doping. ?Everyone in cycling dopes himself,? he said in Scott?s 1971 article. ?Those who claim they don?t are liars.? In Anquetil?s era, the agents of choice were stimulants such as amphetamines, but as early as the late 1800s cyclists fueled up with a mixture of coca leaf extract and wine called Vin Mariani, according to a 1983 Hastings Center report."
Good article
HERE on how doping has been in sports for longer than you think.