This product is ABSOLUTELY HORRIBLE! My son who is 21 was drinking this stuff and no matter what he did or what he ate he kept losing and losing and losing weight to the point where he looked anorexic. You could see his ribs you could see his shoulder blades his cheeks were starting to sink in to the point to where I was about to take him to the Dr and get checked out to figure out why he losing all this weight. He was up a little over 130 and in less then a month he was at 120. My dad suggested it was the stuff he was drinking (the g fuel) so I made him promise me that he would stop drinking it for a month to see if he would put on weight or if it is something medically wrong with him. He stopped drinking it and guess what in a couple weeks of him stopping drinking G fuel he's put on 10 lbs. This crap was killing my son and I would NEVER EVER suggest this product to anyone and in fact I wish they would pull it from the shelves so nobody else has to go through what a worried mom went through.