Diverticulitis Support Group
Diverticulitis is a common disease of the bowel, in particular the large intestine. Diverticulitis develops from diverticulosis, which involves the formation of pouches on the outside of the colon. Diverticulitis results if one of these diverticula becomes inflamed. Diverticulitis most often affects middle-aged and elderly persons, though it can strike younger patients as...
Surely if soy milk was also prohibited, it would have to be specifically mentioned.
If you want to feel fully reassured, ask the pharmacist.
But the honest answer is - I don't know. I always try to avoid it if doing the Cipro/Flagyl thing, but I'm a bit paranoid.