After a couple nights of helplessly watching our exclusively breastfed 2-week-old crying and writhing in pain, I ordered Evivo. I was given antibiotics intravenously while I was in labor, so I wanted my baby to have the b. Infantis strain of probiotics to populate her gut. I also started using another probiotic and cut out dairy at the same time. I noticed a difference right away. She was able to pass gas and poop easily, when before she seemed to struggle to get them out. Evivo, combined with the other probiotics and removing dairy from my diet made a huge difference! I only wish these were available with my first baby!