7 Types of Creatine Ultimate Nutrition ISO Mass Xtreme Weight Gainer has a 7.5g of Creatine blend that will help your body to gain weight with increased lean muscle mass. 76 Grams of Protein With each serving of Iso Mass Xtreme Gainer get 76g of Proteins that will help you to increase muscle mass with improved strength and stamina. 84 Grams of Carbohydrates Mass Xtreme Gainer provides your body with 84g of Carbohydrates which is a much-needed material to restore the muscle glycogen that has been used up during exercise. 820 Calories For comprehensive results, Mass Xtreme Gainer consists 820 muscle pumping calories with each 157g serving mixed with 2% reduced fat milk.