I really really wanted to love this. I am a big believer in probiotics so when my newborn daughter was spitting up a lot and only pooping about every 3-5 days I started Evivo. She is exclusively breastfed and I started it at about 3 weeks old. First, it smells weird, which I was willing to overlook based on the science behind it's effectiveness. Second, it doesn't dissolve well at all and is just grit mixed in with the breastmilk,...again I was willing to overlook. But unfortunately, it did nothing positive for my daughter. Spit up was the same if not more and she went to pooping only once a week with lots of gas pain and fussiness. Her poop did get a lot thicker and kind of a tan...it looked like pudding so diaper changes were a little easier than normal runny breastfed poop but her lack of contentment outweighed this. I gave it about three weeks and then switched her to another probiotic that has three different strains, including b. Infantis and the gas pains decreased pretty quickly. She still only poops once a week but this probiotic seems to make her feel better. The Evivo did not. I wish it would have been the magic bullet I was hoping for.