Riders have been urged to read up on the World Anti-Doping Agency's (WADA) rules after three competitors tested positive for prohibited substances.
US eventers Hannah Sue Burnett, Jennie Brannigan and Alyssa Phillips were competing in the CIC3* at Ocala Jockey Club in Florida (17-19 November) when they tested positive for prohibited substances.
Jennie and Alyssa both said they believe the positive tests are as a result of medications that had been prescribed to them for legitimate medical conditions and were not taken in order to enhance their performances.
Please click here to read the rest of the article as it appears on the Horse and Hound website
Article written by: Lucy Elder