Prolonged fecal elimination of isoxazoline antiparasitic drugs in dogs and cats: is there a risk for nontarget species?

Isoxazoline antiparasitic drugs are a new class of ectoparasiticides used in veterinary medicine for companion animals. Four active substances-fluralaner, (es)afoxolaner, lotilaner, and sarolaner-are marketed globally for flea and tick control. Isoxa…

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