The Kentucky Equine Drug Research Council (EDRC), which serves as an advisory board to the Kentucky Horse Racing Commission (KHRC), advanced a Dec. 1 recommendation to that full board that would require any horse who receives clenbuterol to be restricted via the veterinarian's list for 21 days and then test clear of that substance prior to being removed from the list and allowed to compete. Kentucky's current clenbuterol regulation requires a prescription that must be filed with the KHRC within 24 hours of dispensing the drug and a withdrawal time...