Description
Fuel Your Muscle Building Goals with Maximum Calories
Building serious muscle mass requires serious nutrition. ON Serious Mass in rich chocolate flavor is engineered for athletes, bodybuilders, and fitness enthusiasts who struggle to consume enough calories through whole foods alone. Whether you have a fast metabolism, a demanding training schedule, or difficulty gaining weight, this high-calorie formula provides the nutritional foundation you need to pack on quality mass.
Powerful Macronutrient Profile for Optimal Growth
Each two-scoop serving delivers an impressive nutritional punch designed to support your bulking phase. With 1,260 calories when mixed with water (over 1,630 with low-fat milk), you get substantial caloric support between meals or post-workout. The formula provides 50 grams of complete protein from premium whey protein concentrate, casein, and egg sources—combining fast- and slow-digesting proteins for sustained muscle protein synthesis.
The 253 grams of complex carbohydrates fuel intense training sessions and help replenish depleted glycogen stores after demanding workouts. Unlike many competitors, this formula contains no added sugar, relying on maltodextrin and natural carbohydrate sources for clean energy.
Enhanced Formula with Performance Boosters
Beyond basic macros, Serious Mass includes 5 grams of creatine monohydrate per serving to support strength, power output, and performance gains. You’ll also benefit from 8 grams of naturally occurring glutamine for muscle recovery, plus 11 grams of branched-chain amino acids (BCAAs) and 24 grams of essential amino acids – all critical for muscle repair and growth.
The comprehensive vitamin and mineral blend features 25 essential nutrients, including immune-supporting vitamin C and zinc, ensuring your body has the micronutrients needed during intense training periods.
Versatile Usage for Maximum Results
This weight gainer adapts to your lifestyle and goals. Use it as a post-workout recovery shake to capitalize on the anabolic window, consume between meals to maintain positive nitrogen balance, or drink before bed for overnight muscle support. New users should start with half servings and gradually increase intake.
For even more calories, blend in natural peanut butter, fruits, nuts, or oats. The smooth chocolate flavor mixes easily in a blender with water or milk, creating a delicious shake you’ll actually look forward to drinking.
Trusted Quality from Industry Leaders
Optimum Nutrition has maintained its position as a global leader in sports nutrition for over 35 years, trusted in more than 90 countries. Their commitment to quality, third-party testing, and science-backed formulations ensures you get a premium product that delivers real results.
Who Should Use This Weight Gainer?
Ideal for hard gainers who struggle to gain weight, athletes in bulking phases, bodybuilders looking to increase muscle mass, individuals recovering from illness or maintaining weight during high activity levels, and anyone needing convenient, high-calorie nutrition.
Key Benefits:
- Supports muscle building and healthy weight gain when combined with resistance training
- Delivers over 1,260 calories per serving for a calorie surplus
- Contains 50g complete protein blend for muscle recovery
- Provides 253g carbohydrates to fuel workouts and restore glycogen
- Includes 5g creatine monohydrate for strength and performance
- Rich in 25 vitamins and minerals for overall health
- Delicious chocolate flavor for enjoyable daily consumption
- No added sugar—clean carbohydrate sources
- Easy to mix and digest
- Convenient alternative to multiple meals
