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Optimum Nutrition Serious Mass 12lbs is a premium high-calorie mass gainer specially designed for hard gainers, athletes, and bodybuilders who struggle to gain size and muscle. With over 1250 calories and 50g of protein per serving, this powerful gainer provides everything your body needs to stay in a calorie surplus, build lean muscle, and recover faster after intense workouts.
Packed with complex carbohydrates, essential vitamins, minerals, creatine, and glutamine, Serious Mass is the ultimate solution for anyone looking to bulk up effectively.
Over 1250 calories per serving
50g of high-quality protein blend (whey, casein & egg protein)
More than 250g of complex carbs per serving
Enriched with 25+ vitamins and minerals
Includes creatine, glutamine & glutamic acid
Supports maximum size, strength, and recovery
12lbs bag offers long-lasting supply for serious bulkers
Delicious flavors with easy mixability
With more than 1250 calories per serving, Serious Mass ensures you get the calorie surplus required for muscle growth and mass gain.
Each serving delivers 50g of protein from a high-quality blend, supporting lean muscle development, faster recovery, and increased strength.
Over 250g of complex carbs fuel your body with sustained energy while replenishing glycogen stores after intense training sessions.
Infused with creatine and glutamine, Serious Mass helps reduce muscle soreness, improve recovery, and boost training performance.
Serious Mass contains 25+ vitamins and minerals to support overall health, metabolism, and energy production.
Calories: 1250+
Protein: 50g
Carbohydrates: 252g
Fats: 4.5g
Creatine, Glutamine & Glutamic Acid included
25+ Essential vitamins & minerals
Mix 2 heaping scoops (approx. 334g) with 24–32 oz of water or milk. Blend until smooth and creamy. Consume 1–2 servings daily, depending on your calorie needs.
Best times to use:
Post-workout (for recovery & growth)
Between meals (to maintain calorie surplus)
Before bed (to fuel overnight recovery)
Hard gainers who struggle to put on size
Athletes in bulking cycles
Bodybuilders targeting rapid mass gain
Fitness enthusiasts needing extra calories & protein
Optimum Nutrition is a globally trusted brand known for producing high-quality, science-backed supplements. Serious Mass is their flagship gainer formula, offering unmatched calorie, protein, and carbohydrate content in one shake. The 12lbs pack provides excellent value and is ideal for long-term bulking goals.
Q1: How many servings are in Optimum Nutrition Serious Mass 12lbs?
The 12lbs bag provides approximately 16–18 servings.
Q2: Can beginners use Serious Mass?
Yes, it’s suitable for beginners and advanced athletes alike.
Q3: Can I take Serious Mass every day?
Yes, daily use is safe as part of a balanced diet and workout plan.
Q4: Can I use it as a meal replacement?
Yes, but for best results, combine it with whole foods for complete nutrition.
Q5: Does Serious Mass contain creatine?
Yes, it includes creatine, glutamine, and glutamic acid to enhance performance and recovery.
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Take extra 500 discount on your first order
Hurry Up NOW
Enter the code below at checkout to get discount