Estradiol and Testosterone
Synovex H is a veterinary hormone implant designed specifically for use in heifers (young female cattle). It contains a combination of estradiol benzoate and testosterone propionate, which work together to promote weight gain and improve feed efficiency in growing heifers.
Synovex H is a growth-promoting hormone implant used in heifers to enhance weight gain and feed efficiency.
Key facts at a glance
- RxNorm
- 2612076
- Generic
- Synovex H
- 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.
Synovex H is indicated for use in heifer calves and yearlings to promote weight gain and improve feed efficiency during the growing phase. It is specifically formulated for use in replacement heifers and is not intended for use in beef cows or steers.
Synovex H contains estradiol benzoate (an estrogen) and testosterone propionate (an androgen) which work synergistically to enhance protein deposition and reduce fat accumulation. These hormones promote anabolic effects that increase muscle growth and improve overall feed conversion in cattle.
Synovex H is administered as a subcutaneous implant in the ear (middle third of the ear, behind the ear cartilage). It must be used only in healthy animals and is a prescription-only veterinary product. The product has a specified withdrawal period before slaughter that must be observed. Users should follow all applicable regulations regarding hormone use in livestock production.
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