The 100 Whey Protein Gold Standard from Optimum Nutrition contains whey isolate and concentrate with Aminogen, an enzyme. It’s marketed as the top protein that’s available in the marketplace these days. The main purpose of this dietary supplement is to build muscles, so it’s highly recommended for those who are undergoing resistance training. According to the manufacturer, you can drink this supplement during the day or following the workout. If you have the extra money and eager to improve your muscle strength and mass, you may want to try buying one and see for yourself whether it’s really effective or not.