High Quality Vegetarian Whey Protein Chocolate 12 oz 14 servings. Whey protein, derived from milk, is one of the highest quality proteins available. Over the past several years, numerous research studies have demonstrated the significant health benefits of whey protein. In addition to being an excellent source of high-quality protein, whey also contains significant amounts of the branched-chain amino acids (BCAA’s) leucine, isoleucine, and valine. Whey protein contains key building blocks for glutathione synthesis, and contains important immune supporting factors. Overall, whey protein is one of the most versatile sources of protein, due to the many health benefits it provides. As part of a comprehensive weight management program, bodybuilding regimen, or as a way to meet daily protein requirements, whey protein can help support optimal health and wellness.