FREE STANDARD SHIPPING & GIFT ON ALL ORDERS OVER $99* 
30 DAY MONEY BACK GUARANTEE
Serious Mass by Optimum Nutrition
HIGH-CALORIE WEIGHT GAINER
Serious Mass is the ultimate in weight gain formulas. With 1,250 calories per serving and 50 grams of protein for muscle recovery support, this instantized powder makes the ideal post-workout and between meals shake for sizing up your goals. Serious Mass provides you with the tools you need to pack on the pounds and help you develop the physique you’ve always wanted.
- Adding Calories Has Never Been This Easy or Tasted So Good
- 1,250 Calories
- 50 Grams of Blended Protein
- Over 250 Grams of Carbohydrates with NO ADDED SUGAR
- Creatine, Glutamine and Glutamic Acid
- 25 Vitamins and Essential Minerals.
debbie volenski (verified owner)
Have now been using it for a month, went from 37 kilos to 45, am using it for weight gain after losing weight from being sick. worked so well I am going to purchase another. highly recommended
malik.elmasri (verified owner)
Great taste and effective!!! I was 74kg underweight, and am now 88kg it took a span of 3+ months to get up to this weight. If you want to start going gym and you don't eat much this will definitely help fill in those missing nutritional needs.
debbie volenski (verified owner)
Its to early to say if the weight gain part is working, have not been using it long, but the taste is great. If you use the full amount of powder it can be a bit thick. The strawberry flavor is very nice. Also great value for money. Its best mixed with milk.