Optimum Nutrition Serious Mass Chocolate Peanut Butter

• Pack in serious calories fast — ideal for hardgainers who struggle to put on size.
• 50 g blended protein supports muscle growth and recovery after tough sessions.
• 250 g carbohydrates help refuel glycogen and power your training.
• No added sugar — calorie-dense nutrition with purpose.
• Delicious Chocolate Peanut Butter flavour that mixes smoothly for easy, daily use.

Build Size the Smart Way with Optimum Nutrition Serious Mass

Finding it hard to tip the scales? Optimum Nutrition Serious Mass Chocolate Peanut Butter is a high-calorie mass gainer designed to help you eat enough — without constant cooking or snacking. Each shake delivers an incredible 1,250 calories with 50 g of blended protein and 250 g of carbs to support muscle building and intense training — all with no added sugar. If you’re a true hardgainer, this is the reliable, great-tasting way to fuel your surplus.

Why Serious Mass?

• Trusted quality from Optimum Nutrition — a global leader in sports nutrition.
• Balanced macros for bulking — protein to support muscle growth, carbs to replenish and drive performance.
• Flexible to your goals — use full or half servings to match your calorie needs.
• Ultra-convenient — a nutrient-dense shake you can take between meals, post-workout, or when appetite is low.
• Seriously tasty — Chocolate Peanut Butter flavour that actually makes hitting calories enjoyable.

Perfect For

• Hardgainers who struggle to gain weight through food alone.
• Athletes in a bulking phase or off-season.
• Busy schedules where consistent high-calorie meals are tough to manage.

How to Enjoy

Blend with water or milk for a creamy shake. Want even more calories? Add oats, a banana, or a drizzle of peanut butter. Use between meals, after training, or whenever you need a calorie boost to support your mass-building goals.

What You’ll Notice

Consistency is everything. Commit to your training, keep your daily calories in surplus, and make Serious Mass part of your routine. You’ll have the fuel you need to recover, grow, and progress — one shake at a time.

Flavour: Chocolate Peanut Butter
Brand: Optimum Nutrition
Barcode (EAN): 5060245607636

Please use as part of a varied, balanced diet and active lifestyle.