I have taken it, it helped alot. Ummm, time in the bathroom was "a little more pleasent" than before, if you know what I mean. At first I didn't notice a difference. I also have IBS, I've used Bentyl for the spasms. Its an older drug, and it works pretty good. As far as relieving some symptoms, try a food elimination diet. I did that and I am perfectly happy. In fact I rarely have to go back to see my GI doctor...who didn't have the best bedside manner either. But anyways, I grabbed a Colon Cleanser and I had researched out TONS of them and found one at Akins called First Colon Cleanse. (Its in a purple and yellow box and has a sun on it). Cleanses are good for your body if done properly. Anyways, I changed from sodas to all water and juices (diluted) and pulled out dairy. We were already Lactose free but I removed cheeses and stuff. After a few weeks I started eliminating Gluten. And girl am I the happiest person ever now. My cramps have gone away and I have stopped with the Lactulose I still keep it and Bentyl around for just in case purposes. I have also gone vegetarian (for other reasons too) but will simple diet changes and an occasional cleanse, I'm good. Research out what you want to do, cause what worked for me may not work for you, but its worth the try. There are a few websites that cater to IBS cooking... Google recipes for IBS or gluten-free cooking. My fav website is 101cookbooks.com. and glutenfreegoddess.blogspot.com
Good luck, if you need anything else, don't hesitate to ask!!!