I bought this as a supposedly high quality probiotic that is good for infants. My little guy has reflux and terrible gas and our pediatrician recommended trying a probiotic. We have tried this off and on over the last 2 months and each time it causes him writhing pain and difficulties pooping. We have tried multiple times, only 1-2 drops each time. Poor guy becomes miserable for about 12 hours. Something more baby specific worked much better for us.