What is an effective treatment option for coccidiosis?

• A. Metronidazole
• B. Doxycycline
• C. Albendazole
• D. Amprolium or sulfadimethoxine

Answer: (D)

Coccidiosis is caused by protozoan parasites, so the treatment must be an anticoccidial that directly targets those parasites. Amprolium and sulfadimethoxine are classic anticoccidials used to prevent and treat coccidiosis by interfering with the parasite’s metabolism, limiting its ability to grow and reproduce. The other options don’t work against coccidia: metronidazole is aimed at anaerobic bacteria and some protozoa but is not effective for Eimeria; doxycycline targets bacteria; albendazole targets helminths. So the best choice is amprolium or sulfadimethoxine.