This supplement is usually used as a secondary source of protein needed in our body's to help build healthy and strong muscle tissues. You may be thinking well it's probably not safe and definitly not natural, but protein is a nessesairy substance needed in your body, no matter how tall, slim, overweight or muscular you are your body always needs it. So taking a little extra is just adding onto what you body naturally makes and takes in through daily meals. This supplement is only to be used for additional protein in your diet, and is not made to replace meals. Optimum Nutrition makes many different kinds and types of protein powders. For the Gold Standard 100% Whey Protein Isolates they have many flavors such as Chocolate, Vanilla, Chocolate Mint, Banana Cream, Cookies N' Cream, Tropical Punch and many others. I've been using this protein powder almost everyday after I go to the gym in the efforts to add on a couple of pounds of muscle, for sports. So far I have gained about 5 pounds of lean muscle over a little bit less then a month’s span. This supplement doesn’t necessarily make you gain a lot of muscle mass. They recommend that you take about 1-2 grams of protein for each pound of body weight. I only take 1 scoop per day and its working just well on top of my large appetite. It is completely your decision to regulate how much you take each day. One scoop of the Chocolate Mint flavored Whey Protein has 24g of protein and very little fats and cholesterol. The 5.15 pound container of Protein Powder I purchased gives you 77 scoops (30.4 g's a scoop) this would last a long time if you only take a scoop for each workout you have. When I first purchased the Chocolate Mint flavor, I really didn’t expect a great taste. The first day I decided to mix it with water and I really found it gross, tasting a lot like bad chocolate milk. The second day I decided to mix it in my milk and it was absolutely delicious. It tasted like really good chocolate milk with a hint of mint. This supplement is legal for use of all ages but should still be used responsibly. I really am happy with my purchase of Optimum Nutrition Gold Standard Whey Protein Powder and hope this reviews gave a clear understanding of this well formulated Optimum Nutrition Supplement.