High-Calorie Weight Gainer for Muscle Growth, Recovery, Strength & Size
If gaining weight and building muscle has always been a challenge, Optimum Nutrition Serious Mass is designed to help you fuel growth with the calories, protein, and carbohydrates needed to support serious mass-building goals.
Delivering over 1,200 calories, 50g of protein, and more than 250g of carbohydrates per full serving, Serious Mass provides the nutritional support needed for hard gainers, athletes, and anyone looking to increase size and strength. This calorie-dense formula also includes vitamins, minerals, creatine, glutamine, and naturally occurring amino acids to support recovery and performance.
Whether you're bulking, increasing strength, or simply trying to add quality size, Serious Mass helps make hitting your daily calorie goals easier.
🌿 Why You'll Love It
✔️ Over 1,200 calories per serving
✔️ 50g of protein to support muscle growth
✔️ More than 250g of carbohydrates for calorie support
✔️ Includes creatine and glutamine
✔️ Supports weight-gain and mass-building goals
✔️ Contains vitamins and minerals for nutritional support
✔️ Great for hard gainers and athletes
✔️ Ideal for post-workout recovery or meal supplementation
💪 What It Helps Support
Optimum Nutrition Serious Mass is designed to help support:
Healthy weight gain goals
Muscle size and mass development
Recovery after training
Daily calorie intake
Strength-building programs
Lean muscle growth
Athletic performance
High-calorie nutrition plans
This formula is commonly used during:
Bulking phases
Mass-gaining programs
Off-season training
Strength-building cycles
Athletic performance programs
Muscle-building nutrition plans
🔥 Key Ingredients & Why They Matter
50g Protein Blend
Serious Mass provides a blend of premium protein sources that help support:
Muscle growth
Recovery after exercise
Lean muscle maintenance
Strength-training goals
Protein provides the amino acids needed to help repair and build muscle tissue.
Over 250g of Carbohydrates
Carbohydrates help support:
Calorie intake
Energy production
Recovery after workouts
Glycogen replenishment
Mass-building nutrition goals
The high carbohydrate content helps create the calorie surplus often needed for weight gain.
Creatine Monohydrate
Creatine is one of the most researched performance ingredients and helps support:
Strength
Power output
Athletic performance
Muscle-building programs
Glutamine & Glutamic Acid
These amino acids help support:
Recovery
Training performance
Active lifestyles
Muscle-building nutrition plans
Added Vitamins & Minerals
Serious Mass includes essential nutrients that help support:
Daily wellness
Energy metabolism
Active lifestyles
Overall nutritional balance
⚡ Why Choose Serious Mass?
Many people struggle to consume enough calories through food alone.
Serious Mass helps solve this challenge by providing:
High-calorie nutrition
Quality protein
Performance-support ingredients
Recovery nutrition
Convenient mass-gaining shakes
Making it one of the most popular weight gainers among athletes and hard gainers worldwide.
🏋️ Best For
Hard gainers
Bodybuilders
Strength athletes
Powerlifters
Athletes with high calorie needs
Individuals struggling to gain weight
Active lifestyles
Perfect for:
Bulking phases
Muscle-building programs
Post-workout nutrition
Strength-building cycles
Off-season growth phases
High-calorie meal supplementation
🕒 How to Use
Mix one serving with water or milk and consume between meals, after workouts, or whenever additional calories are needed.
For best results:
Use consistently
Follow a structured training program
Meet daily calorie goals
Stay properly hydrated
Many users divide servings throughout the day to make calorie intake more manageable.
🍨 Flavor Options
Available in popular flavors including:
Vanilla
Chocolate
Strawberry
Flavor availability may vary.
📦 Available Sizes
Available in multiple sizes including:
6lb
12lb
Size availability may vary.
🔄 Stacks Well With
Pairs well with:
Creatine Monohydrate
Pre-Workout Supplements
BCAAs & EAAs
Multivitamins
Electrolytes
Recovery Supplements
This helps create a complete muscle-building and mass-gaining stack.
❓ Frequently Asked Questions
What does Optimum Nutrition Serious Mass help support?
Serious Mass helps support healthy weight gain, muscle growth, calorie intake, recovery, and strength-training goals.
Is Serious Mass good for gaining weight?
Yes. Serious Mass is specifically designed to help individuals increase calorie intake and support healthy weight-gain and muscle-building goals.
How much protein is in Serious Mass?
Each full serving provides 50g of protein to help support muscle recovery and muscle-building goals.
Does Serious Mass contain creatine?
Yes. Serious Mass includes creatine monohydrate to help support strength, power, and athletic performance.
Who is Serious Mass best for?
Serious Mass is ideal for hard gainers, athletes, bodybuilders, and anyone looking to increase calorie intake and build muscle mass.
📦 Key Details
High-calorie weight gainer
Over 1,200 calories per serving
50g protein per serving
More than 250g carbohydrates
Includes creatine and glutamine
Supports muscle growth and recovery
Great for hard gainers and athletes
Ideal for bulking and mass-building phases
Fuel Bigger Goals. Build Serious Size.
Give your body the calories, protein, and performance-support ingredients needed to help maximize muscle growth, recovery, and strength gains.
👉 Click Add to Cart and experience Optimum Nutrition Serious Mass today.
