The PGA Tour has suspended Byeong Hun An for three months for violating its anti-doping policy, it was announced Wednesday.
In a statement, the PGA Tour said An tested positive for a substance banned by the World Anti-Doping Agency that was included in an over-the-counter cough medicine in his native South Korea.
The PGA Tour said An "cooperated fully with the Tour throughout the process and accepted his suspension," which is retroactive to Aug. 31. He will be eligible to return to competition on Dec. 1.
An, who is ranked 53rd in the Official World Golf Ranking, has never won on the PGA Tour.