Amprolium
![Amprolium synthesis:[1][2] Rogers, Sarett, U.S. Patent 3,020,277 (1962 to Merck & Co.), see also U.S. Patent 3,020,200 [3]](/uploads/202412/21/Amprolium_synthesis.svg5042.png)
Amprolium (INN, trade names Amprovine, Amprolium, Amprol, Anticoccid) 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.