MET-RX started the high protein revolution when it introduced the MET-RX Original Drink Mix -- America's original and best selling protein drink mix. Metamyosyn, the proprietary protein formulation in MET-RX Original Drink Mix, remains the first and only commercial protein source that enhances amino acid utilization in different states. With 37 grams of exclusive Metamyosyn protein for building lean body mass, 22 grams of carbohydrates to replenish muscle glycogen and less than 3 grams of fat per serving, MET-RX Original Drink Mix is the foundational supplement for all fitness-minded individuals. Scientifically developed 37 grams of exclusive Metamyosyn Protein 27 essential vitamins and minerals including 100% DV of calcium and high levels of antioxidants. A nutritional meal with 240-250 calories. With Glutamine Less then 3 grams of fat per serving. No added sugar or fructose.