Serious Mass – High-Calorie Weight Gainer Box

Serious Mass by Optimum Nutrition (ON) is the ultimate high-calorie muscle-building formula made for athletes and hard gainers who want to gain real size and strength. Designed with a precise balance of quality protein, complex carbohydrates, and essential nutrients, this formula helps you achieve your weight and muscle goals faster and more effectively.

Key Benefits:

• 💪 Calorie-Dense Formula: Delivers over 1,250 calories per serving to support healthy and consistent weight gain.

• ⚡ High Protein Content: Provides 50g of premium protein from a blend of whey, casein, and egg protein to enhance muscle repair and growth.

• 🔁 Boosts Recovery & Performance: Packed with BCAAs, glutamine, and essential vitamins and minerals for improved post-workout recovery and energy.

• 🧬 Supports Muscle Development: The carb-to-protein ratio promotes glycogen replenishment and sustained anabolic activity.

• 📦 Convenient Box Packaging: Ensures freshness, easy storage, and portability for consistent daily supplementation.

How to Use:

Mix 2 scoops of Serious Mass with 500–600 ml of water or milk.
Consume 1–2 times daily, ideally after workouts and between meals for best results.

Ideal For:

• Hard gainers struggling to increase muscle mass

• Athletes needing extra calories and nutrients

• Individuals seeking a complete post-workout recovery formula

Why Choose Serious Mass?

Backed by Optimum Nutrition’s trusted quality, Serious Mass provides a complete and convenient solution for those who want to build serious size and strength. With high-quality protein, complex carbs, and performance nutrients, it’s the perfect mass gainer to help you reach your muscle-building goals — now available in a fresh box-pack version for added convenience and quality.