Our top pick at Fivestar for Mass Gainers! This product brings together the highest-quality, anabolic, championship-grade calories, proteins and carbohydrates in one easy-to-use, highly-effective formula. By combining a scientifically formulated professional-caliber blend of time-released proteins and an anabolic carb matrix that give you 600 growth-triggering calories per serving, this MASS gainer helps build serious size.