I have chronic pancreatitis and have problems absorbing nutrients and gaining weight. When I started using Garden Of Life Primal Defense Vitamins, I weighed less than one hundred in thirty pounds. That's a little underweight as I'm a male and stand about five foot eleven inches. After using this product for two months, along with rice protein shakes, I gained five pounds. I had been drinking rice protein drinks for about a month before buying this, so I think that most of the weight came from the fact I was finally absorbing vitamins, all thanks to Garden Of Life Primal Defense Vitamins. What's more is that I haven't gotten sick at all this winter. I wake up with more energy and don't go to bed exhausted anymore. At one time I was tired all the time because of the lack of vitamins in my system. Not anymore! I highly recommend this to everyone that is in need of extra vitamins and cannot get it through diet alone. I don't want to scare those of you looking to lose weight, as it won't help everyone gain weight. It only helped me because I was underweight because of the lack of nutrients in my system. It also will give you more energy, and not the jittery kind that comes from caffeine!