When I was diagnosed with a perianal fistula, my GI said Humira was no longer an option because there are no studies showing Humira eliminating fistulas.
Remicade is the only thing known to get rid of them for good.
However, the combo of cipro/flagyl antibiotics almost got rid of it, but the side effects were too nasty.
I don't know what your GIs are thinking, but they should know better.
I've had only 2 Remicade infusions and the fistula has already stopped draining. I think one more infusion on Saturday will wipe it out completely. It'll probably do the same for you!