i use culturelle - it is doesn't contain synthetic colors (which i have problems with) preservatives, dairy, lactose, milk, yeast, wheat, gluten or soy <soy is *not* my friend. it takes about 2 weeks to get everything settled down. i still take 2x per day, one in the am and one before bed.
it does take a long time, i still have bad days for no reason at all, seemingly, but overall my quality of life is definitely improved. i figure it took a long time to do that much damage that i was dying from malnutrition....... hang in there, kiddo. hope you feel better!