Zylexis Injectable

Parapoxvirus ovis immunostimulant for non-specific immune stimulation in horses; adjunct for respiratory infections. Parapoxvirus ovis (inactivated) immunostimulant. Mechanism: killed paramunity inducer — stimulates innate immune system (NK cells, macrophages) via TLR3/7 signaling → produces interferon-gamma, IL-2, and other cytokines → non-specific immunostimulation for 1–3 weeks. IM injection; for prophylaxis before stress events in horses. Key information Parapoxvirus ovis (PPVO) immunostimulant for horses. Refrigerate. IV injection. Shake well. Used for upper respiratory disease and stress conditions.

IM injection: administer deep IM. Administer 4, 2, and 0 days before anticipated stress event. Store refrigerated (2–8°C); do not freeze. If a dose is missed This medication is administered by a veterinarian or veterinary staff in a clinical setting. Missed doses are managed by your veterinary team — contact your veterinarian to reschedule.

Injection site reactions (pain, swelling). Fever, lethargy (24–48 hrs post-injection — immune stimulation expected). Anaphylaxis (rare). Generally well tolerated.

For animals Administer 4–8 days before anticipated stress event for optimal immune stimulation. Not approved for use in food-producing animals. For people handling this medication Wash hands thoroughly with soap and water after handling. Avoid contact with eyes; if contact occurs, flush with water for 15 minutes and seek medical attention. Keep out of reach of children. If accidental ingestion occurs, contact Poison Control (1-800-222-1222). Immunostimulant vaccine — Injectable — administered by veterinary staff only. Wash hands thoroughly with soap and water after handling. If accidentally self-injected, seek emergency medical attention immediately. Wash hands thoroughly with soap and water after handling.

Contact your veterinarian. PPVO immunostimulant overdose causes transient fever and injection-site reaction.