Olympic sprint champion Usain Bolt said on Saturday that controversy over Jamaica's anti-doping program is scaring off potential sponsors and costing him money.

"There is a lot going on with this drug thing that I really feel they need to be clear (about) and clarify because now it is causing problems for me when it comes to making money in my sport," he told a news conference in Monaco.

Bolt, who won the male Athlete of the Year award from the International Association of Athletics Federations, has never failed a drug test.