Amprolium HCl is an antiprotozoal agent used in veterinary medicine, particularly for the treatment and prevention of coccidiosis in poultry. Let’s delve into some details:

1. Mechanism of Action:

   • Amprolium is a thiamine analogue that interferes with thiamine metabolism.

   • It specifically blocks the thiamine transporter of Eimeria species, preventing the uptake of thiamine.

   • By doing so, it inhibits carbohydrate synthesis in the parasites12.

2. Uses:

   • In poultry, amprolium is commonly used as a coccidiostat.

   • It helps control and treat coccidiosis, a parasitic disease caused by Eimeria species.

   • Interestingly, it is one of the few medications approved by the FDA for use in egg-laying hens in the United States