I first started taking the Probiotic Pearls after a coworker suggested I try them to deal with stomach issues caused by antibiotics. The Pearls help your body rebalance the level of good bacteria in your gut. This aids in digestion, can help your immune system, and can prevent yeast infections after taking antibiotics. The Pearls are so tiny and easy to swallow. I now take them every day- my primary care doctor and my nutritionist feel that there are benefits to taking them. When I'm on antibiotics for an infection (or for a few weeks afterwards), I sometimes take 2 pearls per day. I've read/heard people say that probiotics can be taken before travel to help you avoid getting sick from the water/food in other countries, but I'm not about to test that out! I've raved about these so much, my parents started taking them and my mom even bought my brother and sister a package at Christmas. I've tried other brands of probiotics but the Pearls are my favorite.