Sarolaner is a synthetic isoxazoline compound used primarily in veterinary medicine as an antiparasitic agent, specifically for the treatment and prevention of flea and tick infestations in dogs. It works by acting as a GABA receptor antagonist and glutamate-gated chloride channel blocker in the nervous system of these parasites, leading to their paralysis and death. Administered orally, sarolaner is effective for up to a month, providing long-lasting protection. It is often included in combination products that also address other parasites, such as heartworms and intestinal worms, offering comprehensive care for canine health. Regular use helps maintain the overall well-being of pets by reducing the risk of diseases transmitted by fleas and ticks. As a high-purity active pharmaceutical ingredient (API), it is suitable for formulation in veterinary products.