Ms Hunter, I wouldn't reccomend that your son take tbis particular supplement (Super Advanced Whey Protein) as it contains some creatine monohyrdrate and it's not the best idea for a 14 year old boy to be taking creatine at such a young age. I would reccomend something like EAS Whey Protein, a cheap protein to get him started, as at this age he should just be consuming alot of calories from the foods he eats, and not from artifical sources like a protein shake. Don't get me wrong, I started using protein shakes when I was 15. They're perfectly fine for a boy looking to add a little bit of muscle on his frame. Just save the creatine for later, if you can return it try and maybe purchase something like Muscle Milk, Complete Whey Protein, (Both brands by cytosport) or Dymatize- Elite whey isolate or Optium Nutrition- Gold standard whey protein (as Manimal stated) Don't look at protein in a bad way! Just make a good habit of reading the nutritional information on the back and seeing what ingredients could possibly harm your son's body. Or you could do what my parents made me do, and go get the supplement checked out by a doctor, and have liver values run etc (which is a bit extreme I thought) but anyway hope this helps and tell your son to work hard at it and he'll see results in no time!