Proteition Elite Nitro Fuel Mass is a high-calorie muscle mass gainer delivering 750 calories per serving, packed with 36g protein and 144g carbs to support rapid weight gain, muscle growth, and recovery. Powered by Testo Boost Matrix, HGH Boost Complex, and Carboplex, it fuels intense workouts with fast and slow-releasing carbs—gluten-free, easy to digest, and zero bloating.