USN Muscle Fuel Anabolic 4kg - ChocolateUSN Muscle Fuel Anabolic 4kg is a larger sized, high calorie protein supplement designed for serious bodybuilders and athletes aiming to pack on muscle mass. With a blend of whey protein concentrate, isolate, and casein, this supplement ensures a steady supply of amino acids to muscles, promoting growth and recovery. The added complex carbohydrates provide the necessary energy to fuel your workouts and replenish glycogen stores. Each serving of USN