I have been taking Adult Probonix for just over 2 months. It has, by far, been the most helpful of any probiotic I've ever used. And I have tried a number of them. For over 20 years I have struggled with chronic constipation, bloating and gas. Probonix has helped me so much; I feel almost normal. And that's saying alot. If you have stomach/digestive issues, try it; It may well give you some blessed relief. Go to their website and read the FAQ section; the base number of drops you start out with may vary, depending on whether you're already accustomed to taking a probiotic. Good luck!