"I have loved and lived this sport but more than a decade ago, I chose the wrong path," he said in a statement released Wednesday. "Even though those mistakes happened more than 10 years ago, and they were short-lived, it does not change the fact that I made them and I have lived with that and been sorry for it ever since."
Michael Rasmussen, a Danish cyclist, alleges in his new book "Yellow Fever" that Hesjedal took his advice and used erythropoietin, also known as EPO.
He said he also gave advice to two other Canadian cyclists, Seamus McGrath and Chris Sheppard, CBC reported.
"I trained with them in the Dolomites and taught them how to [make] vitamin injections and how you took EPO and Synacthen [cortisone]," Rasmussen wrote in the book.
The CBC said it hasn't confirmed any of the book's allegations.
Erythropoietin a hormone that increases red blood cells, was banned in 1990. It is the same substance American cyclist Lance Armstrong was accused of using.
LGBT community has 'bullied the American people': Bachmann
Beautician charged with giving client fatal silicone butt injection