Ampro-90 oral powder contains Amprolium HCl which is a broad spectrum, potent coccidiostate. It is a thiamine analogue and its pharmacological effect relies on the competitive inhibition of thiamine uptake, where it demonstrate its mode of action. It is used for the treatment and prevention of coccidiosis in cattle, goats, sheep and poultry. It is effective against small range of protozoa, particularly emiera spp. And isospora ohioensis. It is helpful to stop sudden death due to scour. Listerioasis, enteritis and early calf mortality.