Efficacy of injectable toltrazuril-iron combination product and oral toltrazuril against early experimental infection of suckling piglets with Cystoisospora suis.

Parenteral and oral toltrazuril administered on the 2nd or 4th dol is safe and effective against experimental infections with C. suis on the 1st to 3rd dol. The clinical outcome of experimental infections seems influenced by bacterial coinfections.