Altrenogest for Horse
Equine · Equus caballus · typical adult weight 350.00–700.00 kg
Altrenogest is used in horse for Estrus suppression, pregnancy maintenance. Routes documented in horse: PO. A typical adult horse weighs 350.00–700.00 kg. ExoticRx lists 1 cited dose rule for Altrenogest in horse, drawn from published veterinary references. Verify against current literature before clinical use.
Trade names: Regu-Mate, Matrix
Dose ranges
| Route | Dose | Frequency | Duration | Indication | Evidence | Source |
|---|---|---|---|---|---|---|
| PO | 0.044 mg/kg | q24h | 15 days for synchronization; continuous for pregnancy | Estrus suppression, pregnancy maintenance | Strong | FDA NADA Label |
Need the exact dose for your patient?
These ranges are per kg. Enter your horse's weight to get the precise dose and draw-up volume — unit and concentration math done for you.
Mechanism of action
Synthetic progestagen that suppresses estrus by inhibiting gonadotropin release. Used for estrus synchronization in mares and gilts.
Side effects & warnings
EXTREME caution in handling — readily absorbed through skin. Women of childbearing age must use protective gloves. Do not use in horses intended for food.
Species-specific contraindications and adverse-reaction reports for horse may differ from canine / feline reference data — consult the primary citations listed with each rule.
Altrenogest dosing in other species
Why a species-specific page? Altrenogest pharmacokinetics differ across species: dose ranges, intervals, and route preferences are not interchangeable. Cross-extrapolation from canine doses is unsafe in horse — the rules above are the citations specific to this species, not generic recommendations.
Sourced from published veterinary references; awaiting credentialed clinical reviewer. See our editorial process. Reference only — not veterinary advice.