Serious Mass 12 lbs.


  • Shipping Weight: 15lbs
  • Manufactured by: Optimum Nutrition
SKU: OPT134 Category:


The Bigger Picture of Weight-Gain: 
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, highly-active metabolisms, weaker appetites and on-the-run lifestyles make consuming sufficient calories through whole foods alone a real challenge.

With Serious Mass, you’ve got nothing to lose and lots to gain. We’ve consolidated over 1,250 calories, 50 grams of protein, 250-plus grams of carbohydrates, and 25 vitamins & minerals with added glutamine and creatine into every serving. It’s time to stop thinking small; get serious – Serious Mass.

Additional information


Banana, Chocolate, Strawberry, Vanilla, Cookies & Cream, Chocolate Peanut Butter