Optimum Nutrition, Serious Mass, High Protein Weight Gain Powder, Strawberry, 6 lb (2.72 kg)

SKU: OPN-02301
Availability: In Stock
23,000 OMR
25,900 OMR
23,000 OMR

Product overview


  • High Protein Muscle Building & Weight Gain Formula*
  • 50 g Protein - Helps Build and Maintain Muscle 
  • 1,260 Calories - Helps Boost Calorie Intake 
  • 254 g Carbs - Helps Fuel Intense Workouts 
  • Artificially Flavored 
  • Protein Powder Supplement 
  • Authentic Optimum Nutrition Product 
  • Informed Choice - Regularly Tested For Banned Substances
  • Strength Training 
  • Supports Performance 
  • Supports Weight Gain Goals

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

A global leader 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, having a highly-active metabolism,
weaker appetite or an 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. it's time to stop thinking small: get
serious-serious mass™.

Scale up your serious mass™

About 2 heaping scoops

  • 25g protein
  • 630 calories
  • 127g carbs

About 1 heaping scoop

  • 50g protein
  • 1,260 calories
  • 254g carbs

Why serious mass™?

  • 50g of protein to support muscle building and recovery**
  • 1,260 calories to support calorie surplus for weight and muscle building**
  • 254g of carbohydrate to support fueling of intense workouts and aid in replenishment of glycogen stores
  • 3g of creatine monohydrate to support performance**
  • Naturally Occurring Glutamine 8g, Branched Chain Amino Acids 11g and Essential Amino Acids 24g
  • Good source of 22 vitamins and minerals
  • Vitamins C, E, and zinc help support a healthy immune system*
  • B vitamins help convert food to cellular energy*

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.

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

Suggested use

  • 340 grams - About 2 heaping scoops serious mass™ protein powder 
  • 24 fl oz - Cold, water, milk or other beverage
  • 30-45 - Blend until dissolved 

Tips: New users may find it beneficial to begin with 1/2 of a serving for the first week and then gradually increase to 1 serving.

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. For best results, consume 2 scoop serving regularly over time in combination with regular resistance exercise.

Other ingredients

Maltodextrin, whey protein concentrate, natural and artificial flavor, sunflower and/or soy lecithin, red 40 lake, acesulfame potassium, sucralose. 

Contains: Milk and soy. 


Store in a cool, dry place. 

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

Contents sold by weight not volume. Settling will occur. 

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 who are pregnant, trying to get pregnant, or are nursing.


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.

Visit manufacturer's website


Supplement Facts
Serving Size: 340 g (About 2 Scoops)
Servings Per Container: 8
  Amount Per Serving %Daily Value*
Calories 1260  
Total Fat 5 g 6%*
Saturated Fat 3 g 15%*
Cholesterol 200 mg 63%
Total Carbohydrate 254 g 92%*
Total Sugars 30 g **
Includes 9g Added Sugars
Protein 50 g 100%*
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 mg 313%
Vitamin B6 (as pyridoxine hydrochloride) 5 mg 294%
Folate (as folic acid) 680 mcg DFE (400 mcg folic acid) 170%
Vitamin B12 (as cyanocobalamin) 10 mcg 417%
Biotin (as d-biotin) 300 mcg 1000%
Pantothenic Acid (as d-calcium pantothenate) 25 mg 500%
Calcium (as calcium citrate, dicalcium phosphate) 550 mg 42%
Iron (as ferrous fumarate) 6 mg 33%
Phosphorus (as dicalcium phosphate, dipotassium phosphate) 500 mg 40%
lodine (as potassium iodide) 52 mcg 35%
Magnesium (as magnesium aspartate) 125 mg 30%
Zinc (as zinc citrate) 15 mg 136%
Selenium (as selenomethionine) 70 mcg 127%
Copper (as copper gluconate) 1 mg 111%
Manganese (as manganese amino acid chelate)  2 mg  87%
Chromium (as chromium polynicotinate) 120 mcg 343%
Sodium 670 mg 29%
Potassium 1300 mg 28%
Creatine Monohydrate 3 g **
* Percent Daily Values are based on a 2,000 calorie diet.
** Daily Value not established.