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Optimum Nutrition

Serious Mass Chocolate

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Retail $33.99 Save 44%
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3 lbs Pwdr
  • Serious Mass weight gain supplement

  • Chocolate flavor

  • No sugar added

If you're aspiring to be bigger, having a highly-active metabolism, weaker appetite or on-the-go lifestyle can make consuming sufficient calories a challenge. With Serious Mass from Optimum Nutrition, you've got nothing to lose and lots to gain. Each serving delivers over 1,250 calories, 50 grams of protein, over 250 grams of carbohydrates plus 25 vitamins and minerals, with added glutamine and creatine. Intended for use with intense weight training and a sensible diet.

Product Label

Supplement Facts

Serving Size 2 Heaping Scoops (334 g)

Servings Per Container 4

  Amount Per Serving in water %Daily Value
Calories 1,250  
Calories from Fat 40  
Total Fat 4.5 g 7%*
Saturated Fat 1.5 g 8%*
Cholesterol 80 mg 27%
Total Carbohydrate 252 g 84%*
Dietary Fiber 4 g 16%*
Sugars 20 g
Protein 50 g 100%*
Vitamin A 5,000 I.U. 100%
Vitamin C 60 mg 100%
Vitamin D 200 I.U. 50%
Vitamin E 30 I.U. 100%
Thiamin 4.8 mg 320%
Riboflavin 4 mg 235%
Niacin 50 mg 250%
Vitamin B6 5 mg 250%
Folic Acid 400 mcg 100%
Vitamin B12 10 mcg 167%
Biotin 300 mcg 100%
Pantothenic Acid 25 mg 250%
Calcium 590 mg 59%
Iron 8 mg 44%
Phosphorus 430 mg 43%
Iodine 150 mcg 100%
Magnesium 140 mg 35%
Zinc 15 mg 100%
Selenium 70 mcg 100%
Copper 1.6 mg 80%
Manganese 2 mg 100%
Chromium 120 mcg 100%
Molybdenum 75 mcg 100%
Sodium 410 mg 17%
Potassium 1,560 mg 45%
Creatine Monohydrate 1 g
L-Glutamine 500 mg
Glutamine Peptides 500 mg
Choline (as choline bitartrate) 250 mg
Inositol 250 mg
PABA (para-aminobenzoic acid) 5 mg

* Percent Daily Values are based on a 2,000 calorie diet.

† Daily Value not established.

OTHER INGREDIENTS: Maltodextrin, Protein Blend (Whey Protein Concentrate, Calcium Caseinate, Egg Albumen, Sweet Dairy Whey), Cocoa (Processed with Alkali), Natural and Artificial Flavor, Vitamin and Mineral Blend (diPotassium Phosphate, Magnesium Aspartate, diCalcium Phosphate, Calcium Citrate, Ascorbic Acid, Niacinamide, Zinc Citrate, Beta Carotene, d-Calcium Pantothenate, d-alpha Tocopheryl Succinate, Selenomethionine, Copper Gluconate, Ferrous Fumarate, Manganese Amino Acid Chelate, Thiamin Mononitrate, Pyridoxine Hydrochloride, Riboflavin, Chromium Polynicotinate, Folic Acid, Biotin, Molybdenum Amino Acid Chelate, Cholecalciferol, Potassium Iodide, Cyanocobalamin), Acesulfame Potassium, Lecithin, Medium Chain Triglycerides.


DIRECTIONS: 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 (ass "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 fl. 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 ½ 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 substantial 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.

NOTE: For best results use Serious Mass combined with intense weight training (3-5 times per week) and a sensible whole foods diet. Also, keep in mind that sufficient recovery between workouts impacts your ability to gain lean mass. Allowing at least 48 hours between workouts involving the same body part is recommended.

CAUTION: KEEP OUT OF REACH OF CHILDREN. Do not take this product if you are pregnant or nursing a baby. Check with a qualified healthcare professional before using this product if you are under 18 years of age or if you have any known or suspected medical condition(s) including diabetes or hypoglycemia, and/or if you are taking any prescription or OTC medication(s).


Serving scoop included, but may settle to the bottom during shipping.


Manufactured in the USA.

Naturally and Artificially Flavored.

Terms and Ingredient Definitions

Optimum Nutrition Serious Mass Chocolate Reviews

Summary of Customer Ratings & Reviews

Customer Ratings & Reviews

Serious Mass Chocolate 2.5 5 2 2
Disappointing I purchased this product to help my son put weight back on following surgery. I was impressed by the healthy ingredients and the lack of saturated fats. My son followed directions carefully; however, he lost weight on this product. Most disappointing was the discovery that there were only 4 SERVINGS in the container. This is a lot of money to pay for only 4 servings, and 4 servings is hardly enough to create significant results. I wish I'd read the small print before we purchased this product. August 24, 2013
Optimum Nutrition Serious Mass Chocolate Great price compared to what is available from local stores. Satisfying chocolate flavor that mixes well, drinks more like a milkshake than an energy drink. Mixes well with bananas. Recommended serving size is a little large. Overall great product. April 7, 2013
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