Major League Baseball's drug policy Joint Drug Prevention and Treatment program is a drug policy established by agreement between the MLB Players Association and the Office of the Commissioner of Baseball in order to deter and end the use by baseball players of banned substances, including anabolic steroids and other illegal drugs, and to "provide for, in keeping with the overall purposes of the Program, an orderly, systematic, and cooperative resolution of any disputes that may arise concerning the existence, interpretation, or application" of the policy itself.