If you are having problems you might want to try "Dannons Activia" Yorgurt, I get the low calorie stuff and it works great and I really had a problem from the drugs I have to take! I was putting a solution in water that was prescribed by the doctor called Glycolax, nasty stuff...for me the yorgurt regulated me again just like their ad promises, another friend of mine who is on an industrial dose of oxycontin also had a severe constupation problem and Dannons Activia yogurt helped him as well. And it tastes really good aside from being a health food as well!