What are you talking about lol, you said it doesn't work when it clearly does, otherwise people who do it for a living wouldn't dope. Regardless of if it works 2% or 20%, it makes a difference and whether it's male or female it's irrelevant as you were talking about the sport as a whole.
But anyway, a lot of the running WR's are set by Kenyan's who have don't even have any anti doping structures setup. Even then, numerous Kenyan runners have been caught doping and they were literally forced to drop 2 runners from their olympic team for doping violations.
2012 Olympics - out of 12 finalists in 1500m race, 4 were suspended for doping.
If you're looking for a male example - Asbel Kiprop, the 2008 beijing gold medal winner in 1500m, failed a doping test for EPO. He's also won 3 world championships.
Seriously, you're hella naive, it's rife in athletics.