My daughter has special needs and is now 4. At 11 months her GI dr recommended we go ahead and convert her from formula to pediasure for all her GI issues and not gaining weight. We did and it worked great. She still drinks 1-3 bottles per day to supplement her diet. She LOVES it and it works great for keeping her growth going in the right direction. We tried organic preoducts, which I liked a lot but what keeps us coming back to Pediasure is that she still only sucks liquids from a nipple and it is so easy to just pop a bottle top on one of these and go! My daughter doesn't talk but when she sees a pediasure bottle, she throws her hands up in the air and squeals! Friends and family give it to her as presents at holidays! It's the only brand that works perfect for our needs and that I trust. I think we will be drinking pediasure for years to come. I buy it in bulk twice per month. We tried other pediasure products and they don't work well for us, but the original blue bottle, vanilla is our favorite!