Indicated to suppress estrus in mares. Suppression of estrus allows for a predictable occurrence of estrus following drug withdrawal. Dosage is 1ml per 110 lbs. daily for 15 consecutive days, given orally on back of mare’s tongue, or applied to usual grain ration. Protective gloves should be worn when handling product; women who are pregnant or suspect they are pregnant should not handle this product. Altrenogest 0.22% oral progestin.