Optimum Nutrition, Serious Mass, Chocolate, 6 lbs (2.72 kg)

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Optimum Nutrition, Serious Mass, Chocolate, 6 lbs (2.72 kg)

Supplement Facts
Serving Size: 2 Heaping Scoops (334 g)
Servings Per Container: 8
  Amount Per Serving in water % Daily Value Amount Per Serving in low fat milk % Daily Value
Calories 1250   1640  
Calories from Fat 40   180  
Total Fat 4.5 g 7%* 20 g 31%*
Saturated Fat 1.5 g 8%* 11 g 55%*
Cholesterol 80 mg 27% 140 mg 47%
Total Carbohydrate 252 g 84%* 291 g 97%*
Dietary Fiber 4 g 16%* 4 g 16%*
Sugars 20 g 56 g
Protein 50 g 100%* 74 g 148%*
Vitamin A 5000 I.U. 100%* 6500 I.U. 130%
Vitamin C 60 mg 100% 66 mg 110%
Vitamin D 200 I.U. 50% 500 I.U. 125%
Vitamin E 30 I.U. 100% 30 I.U. 100%
Thiamin 4.8 mg 320% 5.1 mg 340%
Riboflavin 4 mg 235% 5.2 mg 306%
Niacin 50 mg 250% 50.6 mg 253%
Vitamin B6 5 mg 250% 5.3 mg 253%
Folic Acid 400 mcg 100% 436 mcg 109%
Vitamin B12 10 mcg 167% 12.7 mcg 212%
Biotin 300 mcg 100% 300 mcg 100%
Pantothenic Acid 25 mg 250% 27 mg 270%
Calcium 590 mg 59% 1400 mg 140%
Iron 8 mg 44% 8.3 mg 46%
Phosphorus 430 mg 43% 1130 mg 113%
Iodine 150 mcg 100% 150 mcg 100%
Magnesium 140 mg 35% 239 mg 60%
Zinc 15 mg 100% 18 mg 120%
Selenium 70 mcg 100% 70 mcg 100%
Copper 1.6 mg 80% 1.6 mg 80%
Manganese 2 mg 100% 2 mg 100%
Chromium 120 mcg 100% 120 mcg 100%
Molybdenum 75 mcg 100% 75 mcg 100%
Sodium 410 mg 17% 800 mg 33%
Potassium 1560 mg 45% 2790 mg 80%
Creatine Monohydrate 1 g 1 g
L-Glutamine 500 mg 500 mg
Glutamine Peptides 500 mg 500 mg
Choline(as choline bitartrate) 250 mg 250 mg
Inositol 250 mg 250 mg
(para-aminobenzoic acid)
5 mg 5 mg
*Percent Daily Values are based on a 2,000 calorie diet.
† Daily Value not established.


  • Authentic Optimum Nutrition Product
  • 50 g Protein
  • 252 g Carbs
  • 25 Vitamins & Minerals
  • Naturally & Artificially Flavored
  • Dietary Supplement
  • 1250 Calories

The True Strength of Weight Gainers

Serious weight gain requires serious calories. However, those who need the extra calories most often have the toughest time consuming enough of them. For many aspiring to be bigger, a highly-active metabolism, weaker appetite and on-the-run lifestyle can make it a real challenge to consume enough calories through whole foods alone. With Serious Mass, you've got nothing to lose and lots to gain. We've consolidated 1,250 calories, 50 grams of protein, 252 grams of carbohydrates, 25 vitamins & minerals, glutamine and creatine into every serving. It's time to stop thinking small; get serious - Serious Mass.

Supercharge Your Serious Mass
By Adding One or More of These Foods To Your Shake
Serving Size   Calories Serving Size   Calories
1/2 Cup Granola 250 1 tbsp. Flaxseed Oil 115
1/4 cup Chocolate Chips 198 1/2 cup Oat Bran 108
2 tbsp. Peanut Butter 190 1 small Banana 105
1 oz Almonds 167 1 tbsp. Honey 64
1/2 cup Ice Cream 160      
1/2 cup Coconut 139      

Beyond the Basics

  • 1,250 Calories per Serving in Water; 1,640 Calories when made with Low Fat Milk.
  • 50 Grams of Protein.
  • 252 Grams of Carbohydrates to Support Fueling of Intense Workouts and Aid in the Replenishment of Glycogen Stores - with No Added Sugar.
  • Creatine, L-Glutamine & Glutamine Peptides, Choline, Inositol and PABA.

Suggested Use

Add two heaping scoops of Serious Mass to a blender filled with 24 oz. of water. Blend for 45-60 seconds. Then add a few ice cubes and, if desired, other calorie-contributing ingredients (see "Supercharge Your Serious Mass on the opposite panel) and blend for an additional 30-45 seconds. Tips: Mixing two scoops of Serious Mass with 24 oz. of nonfat or low fat milk instead of water will give you a thicker, creamier, higher-calorie shake. New users may find it beneficial to begin with 1/2 of a serving daily for the first week and then gradually increase to 1 or more full servings several times a day.

Serious Mass is a weight-gain supplement that can be used to feed serious calorie needs in a variety of different ways.

Between meals: Drink ½ - 1 serving of Serious Mass between meals to maintain positive nitrogen balance and support a high-calorie diet.

Post-workout: Begin drinking ½ - 1 serving of Serious Mass 30-45 minutes following exercise to support maximum recovery.

Before Bed: Drink ½- 1 serving of Serious Mass about 45-60 Minutes before bed to provide nutrients to recovering muscle throughout the night.

Suggested Use: For healthy adults, consume enough energy from a combination of high quality foods and supplements throughout the day as part of a balanced diet and exercise program.

Serving scoop included. But may settle to the bottom during shipping.

Other Ingredients

Maltodextrin, protein blend (whey protein concentrate, calcium caseinate, egg, albumen, sweet dairy whey), cocoa (processed with alkali), natural and artificial flavors, vitamin and mineral blend (dipotasium phosphate, magnesium asparate, dicalcium phosphate, calcium citrate, ascorbic acid, niacinamide, zinc citrate, beta carotene, d-calcium pantothenate, d-alpha tocopheryl succinate, selenomethionine, copper gluconate, ferrous polynicotinate, folic acid, biotin, molybdenum amino acid chelate, cholecalciferol, potassium iodide, cyanocobalamin), lecithin, acesulfame potassium, medium chain triglycerides.

Allergen information: Contains milk, egg, wheat (glutamine peptides) and soy (lecithin) ingredients.


Consult your physician before using this product if you are taking any medications or are under a physician's care for a medical condition. Not for use by those under the age of 18 or women that are pregnant. trying to get pregnant, or nursing.


While iHerb strives to ensure the accuracy of its product images and information, some manufacturing changes to packaging and/or ingredients may be pending update on our site. Although items may occasionally ship with alternate packaging, freshness is always guaranteed. We recommend that you read labels, warnings and directions of all products before use and not rely solely on the information provided by iHerb.


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