X2. Many drugs can be used together, but some research should be done before doing so.Sulfadimethoxine kills cocci as well as killing some bacteria that can cause necrotic enteritis. Necrotic enteritis can be a cocci or a bacteria, and Corrid works on cocci. I would not use 2 of any meds except Corrid and Tylan can be used together. But Tylan is basically for respiratory issues.
-Kathy