Aiden got routine iron and a/c/d drops while in the NICU, but when he came home his pediatrician recommended that we not bother supplementing unless we saw signs of anemia. I had read similar information as a PP about iron supplements feeding bad bacteria, and since we were both on antibiotics at birth, I was concerned about gut health in general. We stopped the iron supplement, and soon after added a probiotic supplement, and his gassiness went away. Glorious! Now we're heading into him eating big people food, so I'm trying to introduce him to naturally iron-rich foods, but that's not going so well. I'll consider giving him Floradix if his iron levels drop later this year (I want to get him tested; his pediatrician doesn't think it's necessary ... I should probably listen to him, but I know that iron is important in the right amount/from the right sources).