Serious Mass is a serious Weight Gainer 3,750 Calorie Weight Gain based on 3 servings per day added to your daily intake 50 grams of High Quality Protein Glutamine & Creatine enhanced. Complete Vitamin/Mineral Formula. No sugar added (Not a low sugar product)! Naturally and artificially flavored. Serving scoop included. Scientists tell us that we need to consume approximately 3500 calories (above and beyond what is needed for maintenance) to gain just one pound of bodyweight. Combined with an energy-rich diet and intense physical activity, Serious Mass can help support your quest for a massive, powerful physique.