Anthelmintic formulations

摘要

Disclosed is a stable veterinary formulation containing at least the active naphthalophos (Naphthalimido diethyl phosphate) wherein the liquid carrier comprises a buffered aqueous solution and the naphthalophos (preferably in micronised form) is suspended in the buffered aqueous solution having a pH in the range 2.5 to 5.5. The stable suspension is suitable for use in combination with other anthelmintics and formulations containing naphthalophos alone, or in combination with fenbendazole and/or levamisoleare. Viscosity measurements show the ready made formulations are suitable for use in drench guns.