Amprolium is a coccidiostat used in poultry. The drug is a thiamine analogue and blocks the thiamine transporter of Eimeria species. By blocking thiamine uptake it prevents carbohydrate synthesis. Despite only moderate efficacy it is well favoured due to few resistance issues and is commonly used in conjunction with sulfonamides prophylactically in chickens and cattle as a coccidiostat.

Function:
1. Amprolium has a strong control effect on various coccidiosis.
2. Amprolium is used to prevent and treat coccidiosis in poultry.
3. Amprolium is mainly used to treat diarrhoeal coccidiosis, rectal bleeding, lack of energy, loss of appetite,dark feathers, paralysis and so on.