Equestrian rider Rodrigo Pessoa has been stripped of his fifth-place finish at the Beijing Olympics and banned from competing for 4 1/2 months after a positive drug test on his horse.

The sport’s governing body Friday also fined the 36-year-old Brazilian $1,766. He is suspended until Jan. 10, 2009.

Pessoa’s horse Rufus tested positive Aug. 23 for nonivamide, a banned pain-relieving medication.

They placed fifth in the individual jumping final. Pessoa lost in a jump-off for the bronze medal won by Beezie Madden of the United States.

Pessoa was defending the individual title he won at Athens in 2004. He also won bronze medals for Brazil in team jumping at Atlanta in 1996 and Sydney in 2000.