The winner of the Kentucky Derby, Medina Spirit, was treated with an ointment that included betamethasone, said its trainer, Bob Baffert. Medina Spirit, a thoroughbred race horse, failed a post-derby drug test for the anti-inflammatory steroid betamethasone, putting the horse’s race into question. Baffert, in a statement released by his lawyer, said the horse was treated with an ointment. “Following the Santa Anita Derby, Medina Spirit developed dermatitis on his hind end. I had him checked out by my veterinarian who recommended the use of an anti-fungal ointment called Otomax. The veterinary recommendation was to apply this ointment daily to give the horse relief, help heal the dermatitis and prevent it from spreading,” the statement released Tuesday reads. Betamethasone is allowed in horse racing, but Medina Spirit’s test detected 21 picograms per milliliter, which is more than double the allowed limit for a drug test. “While we do not know …