Yes, probiotics are not as good as they are made out to be. In the future we may be able to take probiotics that make our bowels truly healthy, but that seems quite a way off I think. I think most current probiotics only last 3-6 weeks before they are flushed out/die off. For some reason unknown to me they do not colonize/breed in our intestines. This is not always a bad thing. IME most probiotics have made my health situation worse, so I am grateful they did not take up permanent residence. :)