Try Hyperbiotics PRO-15, 5 Billion CFU - 15 strains. (Amazon) I know they work well. My wife has had stomach issues for years and these set her straight. Takes about a week to stabilize you. She has since recommended them to friends and 2 others (that she recommended them to) have had very good experiences with them. I take them as well but have always had an iron gut, so less of a difference with me. Hope this helps...