LONG-ACTING SPIRO-ISOXAZOLINE ANTIPARASITIC COMPOSITIONS

摘要

The invention describes a long-acting composition comprising a spiro-azetidine isoxazoline of Formula (1 ) or (2) wherein R1a, R1b, R1c and R2 are as described herein, and stereoisomers thereof. The composition is a veterinary composition and also comprises a glycol ether and at least one veterinarily acceptable solvent, and optionally, at least one precipitation inhibitor, antioxidant and additional veterinary agent, and any mixture thereof. The invention also includes a method of treating an animal with a parasitic infestation by administering the long-acting composition to the animal in need thereof.