Question

a 6 year old quarter horse gelding is diagnosed with equine protozoal myeloencephalitis due to sarcocystis neurona. which veterinary only drug is an fda approved option for treatment at 5 mg/kg once daily

Answer 1

Ponazuril (trade name Marquis). Approved for horses at 5 mg/kg PO once daily (paste), typically given for 28 days. Follow-up neurologic exams and supportive care are recommended.