OvaMed is an oral progestin indicated for the suppression of the estrus cycle (reproductive cycle) in mares (female horses). The suppression of the estrus cycle allows for a predictable occurrence of estrus following drug withdrawal. It keeps your mare's cycle regular during the transition from winter anestrus to the physiological breeding season. OvaMed helps manage prolonged estrus conditions and helps you schedule breeding during the physiological breeding season. OvaMed requires a prescription from your veterinarian.