Fluralaner is primarily used as a systemic insecticide and acaricide in veterinary medicine. It is effective against a broad spectrum of ectoparasites including fleas, ticks, mites, and lice in companion animals such as dogs and cats. The compound is commonly administered orally or topically and provides long-lasting protection, often for up to 12 weeks per dose, due to its high stability and slow elimination from the body. It works by disrupting the nervous system of parasites through inhibition of GABA and glutamate-gated chloride channels, leading to paralysis and death. Because of its systemic action, fluralaner remains active within the animal’s bloodstream and tissues, ensuring that parasites are killed upon feeding or contact. Fluralaner is widely used in commercial flea and tick control products for pets, contributing significantly to the prevention of vector-borne diseases such as Lyme disease, ehrlichiosis, and anaplasmosis. Its long duration of action improves compliance in pet owners and reduces the frequency of treatment applications.