My daughter had to take antibiotics at 11 days old, so I thought I’d try Evivo to help with possible gut issues resulting from the medication. I gave Evivo to her for a week and she became constipated. She spent the majority of each day crying in discomfort with poop-free diapers until she’d finally have a huge blow-out. She became agitated and was unable to sleep. I think I will discontinue using Evivo.