I bought online in Feb/11. It did nothing for me but mess with my intestines, I have not been normal since then, loose bms. I got my money back as they have that garantee. You can get yeast fighting packages at your local health store, personal support as well as those folks are up on their knowledge too. Footnote, I did not have a yeast infection however, so it wouldn't have help me, but I know that my bm's are abnormal since. So many things we read online are gimics, just fear mungers trying to sell their product. I learned to go the health store, they really are helpful, and cheaper. Brave on... sheila