When my son is experiencing a flare up, he takes an acidophilus pill(along with a quick change in diet-see tip below),which contains a probiotic blend. These are cultures that helps better digestion and also can be found in yogurt. He can't seem to bring himself to eat yogart, so this pill is like getting the benefits of yogart without actually eating it. It really does help and he can even eat dairy when taking this product. That is huge!
Probiotics are a good kind of natural bacteria. They give your system the friendly active cultures it likes.
Prebiotics are the natural dietary fiber that helps keep those beneficial cultures happy.
The two work together to help crowd out unfriendly bacteria in your system.
I try to do my best in caring for my own digestive health. As I am getting older, my body is certainly changing. What I once could eat, now affects my stomach. You may know what I mean.

I just came across this video which explains how you can care for your own digestive health. Take a look. It may be something you want to try and see if you see a difference in the way you feel.
*TIP: I've done ALOT of research on crohn's and diet. I found that using a crock pot for cooking helps immediately. Cooking foods the traditional way doesn't break down the molecules enough for your digestive system to handle. That's why we experience bloat, cramps and diarrhea. When cooking in the crock pot for up to 9 hours, you are breaking down the molecules, so your body digests the food so much easier. That's why when cooking a roast or chicken etc, the food literally breaks apart. Think about this and you will see it is simple. Cooking meat for only about an hour (give or take) doesn't allow for the chemicals and molecules to break down. The crock pot enables this process and it really is a much healthier way to eat.