Question: how to treat epm in horses?
Answer: Three FDA-approved anti-protozoal drugs are now available to treat EPM: Ponazuril (tradename Marquis; generic name toltrazuril sulfone), an oral paste administered once daily for 28 days. Pyrimethamine and sulfadiazine (tradename Rebalance), an oral suspension administered once daily for as long as 120 days.