Optimum Nutrition Gold Standard 100% Whey Protein Powder is a high-quality protein supplement designed to support muscle support and recovery. Each serving provides 24 grams of protein primarily from whey protein isolate, which has had excess carbohydrates, fat, and lactose isolated out using sophisticated filtering technologies. The powder is instantized for easy mixing using just a glass and spoon. It contains over 5 grams of BCAAs to help build lean and strong muscles. The product is banned substance tested and is suitable for consumption at any time of the day, whether before or after exercise, between meals, or with a meal.