Mass gainer is high-calorie supplement that contain various level of protein, fat, carbohydrates, minerals, vitamins, amino acids, and various other supplements. The amount of protein in a Mass Gainer may be less than that of Whey Protein but the level of carbohydrates and fats is certainly on a higher side. This high carb amount is necessary to boost the calorie intake. 

Mass gainer is high-calorie supplement that contain various level of protein, fat, carbohydrates, minerals, vitamins, amino acids, and various other supplements. The amount of protein in a Mass Gainer may be less than that of Whey Protein but the level of carbohydrates and fats is certainly on a higher side. This high carb amount is necessary to boost the calorie intake.