On recommendation of the site, I went for the megaflora (20 billion), and I have been taking it for a week and a half now. Yesterday, I didn’t feel too bad, but today I don’t feel good again. I did try to double the dose, took one last night and this morning. for some reason, I just do not feel like this probiotic is settling with me. Is this good that I am experiencing digestive distress, and keep on plugging along, die-off. what brands does everyone else take?