Dr. Greene- I have an almost 8 month old baby that has had thrush in her mouth and a fungal diaper rash, on and off, since she was about 2 months old. (I was on antibiotics 3 times, while nursing, for mastitis) My pediatrician has been giving her Nystatin to treat both. I finally had enough of the meds and took her off of them. When she started solids at 6 months she soon started with constipation that I could not correct with diet. I got thinking that she probably has an imbalance of the good bacteria in her stomach, as evidenced by thrush in her mouth. I read about the benefits of probiotics for babies and kids in many different places. I started her on a probiotic until I could talk to her dr. and she started going to the bathroom regularly within 2 days! I asked her ped. about probiotics and got yelled at by a nurse (who was passing the question on to the dr). The dr. relayed the message that he would not recommend probiotics. I am going to go ahead and give them to her anyway, but I am wondering how many parts her billion she should be getting per day at her age? I wanted to give her the GoodBelly probiotics I started her on, but it says it is only for kids starting at 1 year. Any thoughts on that? I emailed the company and they said that is because it has not been tested on younger children. Thank you so much for this article! I feel like I am not crazy even though my doctors made me feel like I was a horrible parent. Meg