Optimum Nutrition Serious Mass Weight Gainer Protein Powder

Product Description:

Take your muscle-building journey to the next level with Optimum Nutrition Serious Mass, the ultimate high-calorie weight gainer designed for those who want to build serious size and strength. Each serving delivers a powerful combination of 1,260 calories, 50g of high-quality protein, and 252g of carbs, fueling intense workouts and supporting muscle recovery.

Perfect for hard gainers and athletes, Serious Mass provides the nutrients needed to boost calorie intake, increase muscle mass, and support strength training. Enhanced with essential vitamins, minerals, and creatine, this formula ensures that your body gets maximum support for growth and performance.

Enjoy it in rich chocolate flavor, whether as a post-workout shake or between meals to meet your daily calorie and protein goals.

How to Use:

• Mix 2 scoops of Serious Mass with 24 fl oz (710 ml) of water or milk in a blender.

• Blend for 30–45 seconds until smooth.

• For a calorie-dense shake, add fruits, nut butter, or other calorie-rich ingredients.

• When to Use:

  • Post-workout for recovery.

  • Between meals to boost calorie intake.

  • Before bed for sustained overnight nutrition.

Tip: Start with ½ serving daily for the first week to allow your body to adjust, then gradually increase to a full serving.