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Optimum Nutrition - Serious Mass 6lbs

Sale price $79.99 CAD Regular price $89.99
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The Serious Mass 6 lb is a powerful high-calorie weight gainer designed for individuals who struggle to gain size. With a strategic blend of protein, carbohydrates, and key nutrients, it helps you reach a calorie surplus and accelerate muscle growth efficiently.

More info about this formula

Discover the formula

Benefits & Results

  • 1200+ Calories per Serving → Ideal for rapid weight gain
  • 50g Protein Support → Helps build and repair muscle tissue
  • 250g+ Carbohydrates → Fuels workouts and recovery
  • Perfect for Hardgainers → Designed for fast metabolisms
  • Convenient Mass Builder → Easy way to increase daily calorie intake

Inside the formula

Protein Blend
Supports lean muscle growth and recovery after training.

Carbohydrate Complex
Provides both fast and sustained energy to maintain performance.

Creatine Monohydrate (included)
Supports strength and muscle volume.

Added Vitamins & Minerals
Helps optimize metabolism and overall health

Usage & Timing

Take 1 serving daily (can split into 2 shakes)

Best timing:
Post-workout
Between meals
Before bed

💡 Pro Tip: Mix with milk, oats, or peanut butter to boost calories even further

More About the Products

The Serious Mass 6 lb is ideal for anyone looking to gain weight quickly without having to eat excessive amounts of food. It simplifies bulking by delivering a dense calorie load in one shake.

Its smaller 6 lb format is perfect for:


  • First-time users testing the product

  • Easy storage

  • Short-term bulking cycles

FAQ - What Customer Ask

Is the 6 lb size enough?

Yes, it's perfect to try the product or for shorter bulking phases.

Does Serious Mass help build muscle?

Yes, when combined with resistance training and a calorie surplus.

Can I take less than a full serving?

Yes, you can adjust serving size based on your calorie needs.

Is it good for skinny people?

Yes, it’s specifically designed for hardgainers.