As a chronic UTI sufferer, I was desperate for a solution. I've been using the Lady Soma cranberry pills for not too long, but can already feel the difference. They DO NOT aggravate the stomach, as some people have said about cranberries. I do feel a slight difference in regards to stomach, though, but I can't say if it's these supplements or something else. But please don't let that deter you - the Lady Soma Cranberry pills are an absolute godsend. I recommend them full-heartedly. I will be taking these on a daily basis for a very very very long time.