Optimum Nutrition, Serious Mass, Protein Powder Supplement, Chocolate Peanut Butter, 6 lb (2.72 kg)

SKU: OPN-05143
Availability: In Stock
23,000 OMR
25,900 OMR
23,000 OMR


  • Supports Muscle Building & Weight Gain Goals*
  • 1,250 Calories Helps Boost Calorie Intake
  • 50 g Protein Helps Build and Maintain Muscle*
  • 253 g Carbs Helps Fuel Intense Workouts
  • Artificially Flavored
  • Strength Training
  • Supports Performance
  • Authentic Optimum Nutrition Product
  • Informed Choice

Serious Mass™ is designed to provide serious calories, protein and carbohydrates - making this a convenient way to get extra calories throughout your day.

Why Serious Mass™ ?

  • Each serving is packed with 1,250 calories to support a calorie surplus for weight and muscle building.*
  • 50 grams of protein to support muscle building  and recovery.*
  • 253 grams of carbohydrates to support fueling of intense workouts and aid in replenishment of glycogen stores.*
  • 3 grams of creatine monohydrate to support performance.
  • 25 vitamins and minerals plus glutamine.

Optimum Nutrition has been trusted to provide the highest quality in post-workout recovery, pre-workout energy, and on-the-go sports nutrition for over 30 years and in 90+ countries. After careful supplier selection, each ingredient is tested to assure exceptional purity, potency and composition. We hold ourselves to the highest production standards, all so you can unlock your body's full potential.

Informed Choice We Trust - You Trust: Informed Choice is a quality assurance program for sports nutrition products. The program certifies that nutritional supplements that bear the informed Choice logo are regularly tested for banned substances by the world class sports anti-doping lab, LGC limited.

*When taken in addition to normal calorie intake and regular weight resistance training

Suggested use

  • 336 grams about 2 heaping scoops Serious Mass™ Protein Powder
  • 24 fl oz cold water, milk or other beverage
  • 30-45 seconds blend until dissolved

Tips: 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 serving a day.

For healthy adults, consume enough protein to meet your daily protein requirements with a combination of high protein foods and protein supplements throughout the day as part of a balanced diet and exercise program.

Other ingredients

Maltodextrin, protein blend (whey protein concentrate, calcium caseinate, egg white, sweet whey), cocoa powder (processed with alkali), natural and artificial flavor, medium chain triglycerides, creamer (sunflower oil, maltodextrin, modified food starch, dipotassium phosphate, tricalcium phosphate, tocopherols), salt.

Contains: Egg, milk, soy.


Store in a cool, dry place.

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

Contents sold by weight not volume.

Some settling will occur.


While PureHerb 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 PureHerb.

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Supplement Facts
Serving Size: About 2 Heaping Scoops (336 g)
Servings Per Container: 8
  Amount Per Serving in water % Daily Value
Calories 1250  
Total Fat 4 g 5%*
Saturated Fat 2.5 g 13%*
Cholesterol 95 mg 32%
Total Carbohydrate 253 g 92%*
Dietary Fiber 4 g 14%*
Total Sugars 16 g **
Includes 10 g Added Sugars
Protein 50 g 100%*
Vitamin A (as beta-carotene) 940 mcg 104%
Vitamin C (as ascorbic acid) 60 mg 67%
Vitamin D (as cholecalciferol) 5 mcg 25%
Vitamin E (as d-alpha tocopheryl succinate) 20 mg 133%
Thiamin (as thiamin mononitrate) 4.8 mg 400%
Riboflavin 4 mg 308%
Niacin (as niacinamide) 50.2 mg 314%
Vitamin B6 (as pyridoxine hydrochloride) 5 mg 294%
Folate (as folic acid) 680 mcg DFE
(400 mcg folic acid)
Vitamin B12 (as cyanocobalamin) 11 mcg 458%
Biotin (as d-biotin) 300 mcg 1000%
Pantothenic Acid (as d-calcium panthothenate) 25 mg 500%
Choline (as choline bitartrate) 250 mg 45%
Calcium (as calcium citrate, dicalcium phosphate) 610 mg 47%
Iron (as ferrous fumarate) 9 mg 50%
Phosphorus (as dicalcium phosphate, dipotassium phosphate) 540 mg 43%
Iodine (as potassium iodide) 53 mcg 35%
Magnesium (as magnesium aspartate) 180 mg 43%
Zinc (as zinc citrate) 15 mg 136%
Selenium (as selenomethionine) 71 mcg 129%
Copper (as copper gluconate) 1 mg 111%
Manganese (as manganese amino acid chelate) 2.45 mg 107%
Chromium (as chromium polynicotinate) 120 mcg 343%
Molybdenum (as molybdenum amino acid chelate) 80 mcg 178%
Sodium 690 mg 30%
Potassium (as dipotassium phosphate) 1100 mg 23%
Creatine Monohydrate 3 g **
L-Glutamine 500 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.