Hello there- I am also IBS-D and I use digestive enzymes from market america. They seem to be the answer to my prayer. I drink them 3-4 times a day. The website I get them from is www. completeix.com (my neighbor is the unfranchise owner) and I truly believe in them. I stopped taking them for 2 weeks while I was trying to get pregnant with my 2nd child and my body flipped upside down so I started on them again and poof the tummy problems went away! Good luck and hopefully we will hear good news soon!