Parapox ovis virus immunomodulator
Also known as: Zylexis, Baypamun
Your veterinarian has prescribed an **immunostimulant** for your horse. * **What it does**: This medication acts like a "wake-up call" to your horse's immune system, helping it fight off specific respiratory viruses (like Equine Herpesvirus) or assisting in reproductive therapies for breeding mares. * **How it works**: It contains a killed virus that cannot cause disease, but tricks the body into mounting a strong, natural immune defense. * **What to watch for**: While generally very safe, any injected biologic can rarely cause an allergic reaction. Monitor your horse for signs of facial swelling, hives, difficulty breathing, or severe lethargy shortly after the injection, and contact your veterinarian immediately if these occur. * **Slaughter warning**: Do not use in horses intended for human consumption within 21 days of administration.
Dosage must be set by your veterinarian for your specific pet. Never give human medication or another pet’s prescription without veterinary guidance.
What it is used for
- Aid in reducing upper airway disease caused by herpesvirus types 1 and 4
- Hyper-responding or delayed uterine clearance (DUC) broodmares
How it is given
Possible side effects
- Anaphylaxis (rare but possible)
Cautions & contraindications
- Prior hypersensitivity to the agent
- **Hypersensitivity Risk**: As with any biologic product, anaphylaxis is possible. Epinephrine (or an equivalent) should be readily available when administering this product. **Regulatory Warning**: This is a USDA-licensed biologic, not an FDA-approved drug. Do not administer to horses within 21 days of slaughter.
Frequently asked questions
What is Parapox ovis virus immunomodulator used for in pets?
Your veterinarian has prescribed an **immunostimulant** for your horse. * **What it does**: This medication acts like a "wake-up call" to your horse's immune system, helping it fight off specific respiratory viruses (like Equine Herpesvirus) or assisting in reproductive therapies for breeding mares. * **How it works**: It contains a killed virus that cannot cause disease, but tricks the body into mounting a strong, natural immune defense. * **What to watch for**: While generally very safe, any injected biologic can rarely cause an allergic reaction. Monitor your horse for signs of facial swelling, hives, difficulty breathing, or severe lethargy shortly after the injection, and contact your veterinarian immediately if these occur. * **Slaughter warning**: Do not use in horses intended for human consumption within 21 days of administration.
Is Parapox ovis virus immunomodulator safe for my pet?
Dosage must be set by your veterinarian for your specific pet. Never give human medication or another pet’s prescription without veterinary guidance.
This article is for general education and is not a substitute for professional veterinary advice. If your pet is unwell, please consult a veterinarian.
Worried about your pet?
Peqaboo’s AI helps you track symptoms, understand lab reports, and know when to see a vet.
Get the Peqaboo app