Every such veterinarian who shall prescribe or use any medication or treatment which contains a drug or drugs, which he has reason to believe are of such character as could affect the racing condition of a horse in a race, shall at the time of such prescribing or use deliver to the steward of the commission and the trainer of the horse under treatment a written statement setting forth the name of the horse and of the trainer, and the fact that such medication or treatment, as the case may be, contains a drug, stimulant or narcotic which, in the opinion of the veterinarian, is of such a character as could affect the racing condition of the horse in a race.
N.Y. Comp. Codes R. & Regs. Tit. 9 § 4213.7