CocciAid for Calves (amprolium) 9.6% Oral Solution Coccidiostat is a trusted, FDA-approved treatment designed to help prevent and control coccidiosis caused by Eimeria bovis and E. zuernii. Formulated with amprolium, this water-soluble solution offers an effective, non-antibiotic approach that's easy to administer through drinking water-making it both practical and economical for producers. Manufactured in a GMP-certified facility in the USA, CocciAid for Calves is a registered trademark of delivers consistent quality and reliable protection for young calves.