There's a lot of things you can do to treat thrush. Apple cider vinegar, tea tree oil, thrush specific products. I have the owner of the mare I trim use 50/50 Triple anti-biotic ointment and athlete's foot cream. This mixture put into a catheter tip syringe is injected into the sulcus of the frog to really penetrate the thrush. It's great stuff.
There on the tips of fair fresh flowers feedeth he; How joyous his neigh,
there in the midst of sacred pollen hidden, all hidden he; how joyous his neigh