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Serious Mass is the ultimate in weight gain formulas. With 1,250 calories per serving and 50 grams of protein for muscle recovery support, this instantized powder makes the ideal post-workout and between meals shake for sizing up your goals. Serious Mass provides you with the tools you need to pack on the pounds and help you develop the physique you’ve always wanted.

Adding Calories Has Never Been This Easy or Tasted So Good

1,250 Calories

50 Grams of Blended Protein

Over 250 Grams of Carbohydrates with NO ADDED SUGAR

Creatine, Glutamine and Glutamic Acid

25 Vitamins and Essential Minerals

Additional information


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Add one serving of ON Serious Mass to your preferred amount of water or milk and shake. For best results consume in between meals, post workout and/or before bed. New users would benefit from starting with half of the recommended serving size.
Serving Information
Serving Size: 2 scoops (334g)
Servings per container: 5455g = 16 servings
Maltodextrin, Protein Blend (Whey Protein Concentrate, Calcium Caseinate, Egg Albumen, Sweet Dairy Way), Creatine Monohydrate, L-Glutamine, Glutamine Peptides, Choline (as Choline Bitartrate), Inositol, Paba (Para-Aminobenzoic Acid), Artificial Flavor, Vitamin & Mineral Blend (Di-Potassium Phosphate, Magnesium Aspartate, Di-Calcium Phosphate, Calcium Citrate, Ascorbic Acid, Niacinamide, Zinc Citrate, Beta Carotene, d-Calcium Pantothenate, d-alpha Tocopherol Succinate, Copper Gluconate, Ferrous Fumarate, Manganese Amino Acid Chelate, Thiamin Mononitrate, Pyridoxine Hydrochloride, Riboflavin, Chromium Picolinate, Folic Acid, Biotin, Molybdenum Amino Acid Chelate, Cholecalciferol, Potassium Iodide, Cyanocobalamin), Medium Chain Tri-glycerides, Acesulfame Potassium
Manufactured using equipment that processes products containing Milk, Soy, Egg, Gluten, Nuts, Peanuts and Shell Fish
For Allergens, please see ingredients in bold.

Nutritional Values
Calories per 334g serving: 1250
Protein (g) per 334g serving: 50
Carbohydrates (g) per 334g serving: 252
of which sugars (g) per 334g serving: 20
Fiber (g) per 334g serving: 4
Fat (g) per 334g serving: 4.5
of which saturates (g) per 334g serving: 1.5
Cholesterol (mg) per 334g serving: 80
Vitamin A (IU) per 334g serving: 5000
Vitamin C (mg) per 334g serving: 60
Vitamin D (IU) per 334g serving: 200
Vitamin E (IU) per 334g serving: 30
Thiamin (mg) per 334g serving: 4.8
Riboflavin (mg) per 334g serving: 4
Niacin (mg) per 334g serving: 50
Vitamin B6 (mg) per 334g serving: 5
Folic Acid (mcg) per 334g serving: 400
Vitamin B12 (mcg) per 334g serving: 10
Biotin (mcg) per 334g serving: 300
Pantothenic Acid (mg) per 334g serving: 25
Calcium (mg) per 334g serving: 590
Iron (mg) per 334g serving: 8
Phosphorus (mg) per 334g serving: 430
Iodine (mcg) per 334g serving: 150
Magnesium (mg) per 334g serving: 140
Zinc (mg) per 334g serving: 15
Selenium (mcg) per 334g serving: 70
Copper (mg) per 334g serving: 1.6
Manganese (mg) per 334g serving: 2
Chromium (mcg) per 334g serving: 120
Molybdenum (mcg) per 334g serving: 75
Sodium (mg) per 334g serving: 410
Potassium (mg) per 334g serving: 1560
Choline (as choline bitartrate) (mg) per 334g serving: 250
Inositol (mg) per 334g serving: 250
PABA (mg) per 334g serving: 5
Creatine Monohydrate (g) per 334g serving: 1
L-Glutamine (mg) per 334g serving: 500
Glutamine Peptides (mg) per 334g serving 500
Please note that nutritional information is based on chocolate flavour and individual flavours may vary.
This product is only intended for use by healthy adults over 18 years of age. Please consult your physician before using this product if you have a pre-existing medical condition, including but not limited to diabetes or hypoglycemia or are taking any prescription or over-the-counter medications. Do not use this product if you are pregnant, expect to become pregnant or are nursing.
STORAGE AND MAINTENANCE: Store this product in a cool, dry place.

If you require more information about nutritions please contact our team here