Altrenogest
Regu-Mate is a veterinary prescription medication containing the synthetic progestin altrenogest. It is primarily used in performance mares to suppress estrus (heat cycles) during competitive seasons or to synchronize estrus for breeding programs.
Regu-Mate is a veterinary progestin medication used to manage reproductive cycles in performance horses.
Key facts at a glance
- RxNorm
- 1667649
- Generic
- Regu-Mate
- Class
- brand-name
- Brands
- —
- Availability
- rx
- Lactation
- unknown
- Routes
- —
- Forms
- —
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Regu-Mate is indicated for the suppression of estrus in estrus-related behavioral problems in performance mares, and for the synchronization of estrus in mares for breeding management purposes.
As a synthetic progestin, altrenogest works by providing hormonal support similar to progesterone, which suppresses the release of gonadotropins (FSH and LH) from the pituitary gland. This action prevents ovulation and suppresses behavioral signs of estrus.
For veterinary use only in horses and pigs. Should not be used in pregnant animals. Administration should be continuous during the treatment period. May cause hormonal side effects. Requires accurate dosing and proper handling as it can be absorbed through skin.
Official drug label
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 9, 2026. · Read our editorial policy