My baby was suffering from gas and colics , she would go without having a bowel movement for days and our pediatrician recommended Evivo and we noticed after the first use she slept longer and was a much happier baby , less gas and I was happy to see poopy diapers. I started to use Evivo when she was 2 months and she will be 3 soon . I wish we would have known about it sooner, but we are very happy with the results and will continue to use it.