Muscle Mass Gainer was created by Labrada as an all-in-one protein shake for “hard gainers ,” those who find it hard, or next to impossible, to gain weight . It’s a high-calorie bodybuilding food with muscle-building protein, carbohydrate, creatine, and glutamine About this item High-Calorie Content for Muscle Gain : Each serving will give you a total of 1246 calories. It’s a great source of high-quality calories for bodybuilders and athletes looking to bulk up and put on healthy muscle mass . Protein-Rich Formula: Labrada ’s super mass gainer provides 40g of high-quality protein per serving from a blend of whey protein concentrate, whey protein isolate, and calcium caseinate. It’ll provide the essential blocks necessary for muscle growth and ... Product description Muscle Mass Gainer was created by Labrada as an all-in-one protein shake for “hard gainers ,” those who find it hard, or next to impossible, to gain weight . Protein-Rich Formula: Labrada ’s super mass gainer provides 40g of high-quality protein per serving from a blend of whey protein concentrate, whey protein isolate, and calcium caseinate. It’ll provide the essential blocks necessary for muscle growth and repair after a tough workout session.