GNC Pro Performance Bulk 1340 is a scientifically formulated mass gainer designed to support muscle energy, recovery, and growth. Each serving delivers 1,340 calories, 50g of high-quality protein, and 277g of carbohydrates. The formula includes 11g of branched-chain amino acids (BCAA) to aid in muscle recovery and reduce muscle protein breakdown. Additionally, it contains 1g of creatine to help muscles produce energy during exercise and 10g of glutamine to support immune health and muscle maintenance. The product is gluten-free and features a natural and artificial strawberries and cream flavor. It is tested for over 145 banned substances and is certified banned substance-free.