Cannabidiol—commonly known as CBD oil—is now classified as a Class 2 drug by the Association of Racing Commissioners International. As such, it is considered a forbidden substance by APHA and is prohibited for use in horses competing in APHA-approved events, per rule SC-085.C.1 in the APHA Rule Book.

Cannabidiol—commonly known as CBD oil—is now classified as a Class 2 drug by the Association of Racing Commissioners International. As such, it is considered a forbidden substance by APHA and is prohibited for use in horses competing in APHA-approved events, per rule SC-085.C.1 in the APHA Rule Book.