Optimum Nutrition Serious Mass

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.