An animal feed supplement in solution form, comprises monensin present in the supplement in a concentration of 5% to about 40% (weight/weight) of the solution, and a solvent selected from mixtures of at least two of benzyl alcohol, oleic acid, propylene glycol, vitamin E, ethanol, glyceryl mono- and di-caprylate with the solvent being present in the supplement in a concentration of about 60% to 95% (weight/weight) of the solution. A food composition comprising the above described animal feed supplement and an animal feed. The above described animal food composition is useful for preventing or treating of coccidiosis in an animal for example a bovine or a goat.
