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

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

Calories 5
Total Carbohydrate 1 g <1%*
Sodium 15 mg 1%
Amino Blend
Micronized Taurine, Micronized L-Glutamine, Micronized L-Arginine, Micronized L-Leucine, Beta-Alanine, Micronized L-Citrulline, Micronized L-Isoleucine, Micronized L-Valine,
Micronized L-Tyrosine, Micronized L-Histidine, Micronized L-Lysine Hydrochloride, Micronized L-Phenylalanine, Micronized L-Threonine, Micronized L-Methionine 5 g **
Caffeine‡ 100 mg **
Green Tea Leaf Extract 50 mg **
Green Coffee Bean Extract 10 mg **
* Percent Daily Values are based on a 2,000 calorie diet.
**Daily Value not established.
‡ Caffeine from tea leaf and/or coffee bean.
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