At the recommendation of my dietician, I take the Probiotic called Jarro-Dophilus EPS. It's vegetarian and I have been taking it for a year now: 10 billion CFU, enteroguard coating, non-geo, and gluten free. I believe it to be very helpful while I was on the Big 3 and the Big 2 and even when I'm not on any medications now. I only take 1 a day.