Altrenogest for Equines

Altrenogest is used to suppress estrus in mares in order to facilitate induction of normal estrous cycle activity. It is also used in mares to synchronize scheduled breeding activity. In the suppression of estrous behavior in mares, this is usually related to mares that are used as performance horses.

Altrenogest is a progestin of the 19-nortestosterone group. As a veterinary medication, it is used extensively in the reproductive management of mares to control the reproductive cycle, help maintain pregnancy, and help with behavior modification. Altrenogest has been demonstrated to maintain pregnancy in oophorectomized mares and may be of benefit in mares that abort due to subtherapeutic progestin levels. Altrenogest is typically administered orally by applying directly on the base of the mare’s tongue or on the mare’s feed.

Since it has been determined that altrenogest can disrupt the hormonal activity of other species via contact, it is recommended that protective gloves be worn when handling altrenogest and that a physician be consulted in the event of accidental contact. According to the available literature, altrenogest should not be handled by women of child-bearing age, and should not be administered to immature animals, animals with diabetes, uterine infection, a history of vaginal discharge or reproductive abnormalities, or animals where the owner or managers suspect they are pregnant.¹

Altrenogest Oral Suspension For Horses

Altrenogest suspension by NexGen is effective in normally cycling mares for minimizing the necessity for estrus detection, for the synchronization of estrus, and permitting scheduled breeding. Altrenogest is also effective in suppressing estrus expression in show mares or mares to be raced.

Suggested Dosing for altrenogest is 1 ML/100 lb.

¹equi-med.com

FOR RX ONLY: A valid prescription from a licensed veterinarian is required for dispensing this medication.