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Optimum Nutrition Serious Mass 12lbs

$139.95 CAD
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Over 10,000 Customers Trust Us Daily — 4.9★ Ratingl Fast 1–3 Day Delivery l

Serious Mass is a high-calorie weight gainer designed for those who struggle to gain weight and muscle. With a powerful blend of protein, carbohydrates, and essential nutrients, it helps you increase your daily calorie intake and support rapid muscle growth.

More info about this formula

Discover the formula

Benefits & Results
  • High-Calorie Formula → Over 1200 calories per serving to support mass gain
  • Muscle Growth Support → Includes quality protein for recovery and development
  • Carb-Loaded Energy → Fuels intense workouts and replenishes glycogen
  • Easy Weight Gain → Ideal for hardgainers and fast metabolisms
  • Added Vitamins & Minerals → Supports overall health and performance

Inside the formula

Usage & Timing

More About the Products

Serious Mass is designed for individuals who have difficulty gaining weight through food alone. Whether you’re a beginner or an experienced lifter, this formula helps you reach your calorie surplus efficiently.

It’s one of the most popular weight gainers worldwide thanks to its high-calorie profile and easy-to-mix formula.

FAQ - What Customer Ask

Is Serious Mass good for beginners?

Yes, it’s ideal for beginners who need extra calories to start gaining weight.

Will Serious Mass make me gain fat?

Weight gain depends on your total calorie intake. Combine with training for best results.

Can I take it without working out?

Yes, but for optimal muscle gain, resistance training is recommended.

How fast will I see results?

Most users notice weight gain within a few weeks when used consistently.

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