Products Archive - Merck Animal Health USA

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RIS-MA® – Removal request in MAHBRS-3725

For vaccination of healthy 18-day-old chicken embryos or 1-day old chickens by subcutaneous injection in the prevention of Marek’s disease.

TRI-HEART® PLUS

For use to prevent canine heartworm disease and for the treatment and control of roundworms and hookworms.

DOLOREX® (butorphanol tartrate injection)

Learn more about this fast-acting pain relief solution for horses which is consistent, safe, and backed by Merck Animal Health.