Our son has struggled with gas and puking since his birth by c-section, despite being breastfed and me watching my diet closely. Nothing we changed seemed to help him very much. He also wasn't able to tolerate solid foods even at 6 months even though he loved the taste! We gave Evivo a try, thinking we had nothing to lose, and his puking and gas resolved almost completely in the first day or two. We let him have a week on Evivo before we attempted solid foods again and when we did, he sailed right through it without any digestive upset! I'm so glad we found Evivo and were willing to try it--it has definitely been worth the investment!