• Supports Muscle Building & Weight Gain Goals*
• 1,250 Calories Helps Boost Calorie Intake
• 50 g■ Protein Helps Build and Maintain Muscle*
• 252 g Carbs Helps Fuel Intense Workouts
• Artificially Flavoured
• Protein Powder Supplement
• Strength Training
• Supports Performance
• Supports Weight Gain Goals
• Authentic Optimum Nutrition Product
• Informed Choice - We Test You Trust
• Regularly Tested for Banned Substances

Why Serious Mass™?

With two heaped scoops, you get ...

• 50 g of protein to support muscle building and recovery‡
• 1,250 calories to support calorie surplus for weight and muscle building‡
• 252 g of carbohydrate to support fueling of intense workouts and aid in replenishment of glycogen stores
• 5 g of creatine monohydrate to support strength, power, and performance‡
• Naturally Occurring Glutamine 8 g, Branched Chain Amino Acids 11 g and Essential Amino Acids 24 g
• Good source of 19 vitamins and minerals
• Vitamins A, C, E, and zinc help support a healthy immune system
• B vitamins help convert food to cellular energy

Optimum Nutrition® has been trusted to provide the highest quality in post-workout recovery, pre-workout energy and on-the-go sports nutrition for over 30 years and in 90+ countries. After careful supplier selection, each ingredient is tested to assure exceptional purity, potency and composition. We hold ourselves to the highest production standards, all so you can unlock your body's full potential.

Serious Mass™ is designed to provide serious calories, protein and carbohydrates - making this a convenient way to get extra calories throughout your day.

*see nutrition information for sat fat, cholesterol and sodium content

‡When taken over time in addition to normal calorie intake and regular weight resistance training.

Tips: New users may find it beneficial to begin with 1/2 of a serving daily for the first week and then gradually increase to 1 serving a day.

• Weight Gain Support helps support increased calorie intake for weight gain goals.
• Protein Support provides protein to support muscle maintenance and recovery.
• Muscle Support helps support strength and fitness routines.
• Calorie Support provides high-calorie nutrition for active lifestyles.
• Workout Support helps complement resistance training and fitness goals.

maltodextrin, Whey protein concentrate, Natural and Artificial Flavour, sunflower and/or soya lecithin, malic acid, acesulfame K, sucralose, tartrazine (E102).