Amprolium Powder is a coccidiostat (antiprotozoal) used for the treatment and prevention of coccidiosis in calves, sheep, goats, chickens (broilers and breeders) and other fowl such as turkeys, with activity against Eimeria spp, especially Eimeria tenella and Eimeria necatrix. It has no adverse effects and is considered one of the safest anticoccidial drugs.