Well, I was just about to try Linda's calcium when I saw the commercial for activia yogurt with the probiotic in it. I decided to try it.Why not? I am 28 years old and have had IBS D for at least 18 years. I have never, ever had relief like I have experienced in the past 3 weeks! It is amazing and I want you guys to try it. You will feel bloated for the first week, I just took some gas x a couple of times a day to relieve that and by the 7th day or so, no bloating, no stomach pains, and NO DIARRHEA! No medicine has done this for me and I have pretty much tried everything there is to try. I forgot what it was like to eat things that I love. I can even eat salad with dinner now! It completly blows my mind. I know things don't work for everyone, but try it. Yogurt is good for you anyway and it is a healthy snack. Let me know if any of you try it. good Luck and i hope it helps you like it has helped me and changed my life! I just can't beleive the change!