Optimum Nutrition Serious Mass Chocolate 6 lb is a high-calorie weight gainer that packs 1,250 calories and 50 grams of protein into every serving to help hard gainers build size and strength. This rich chocolate formula combines fast-digesting whey protein concentrate with over 250 grams of carbohydrates, creatine, glutamine and 25 vitamins and minerals to fuel intense training and support a calorie surplus.
Why This Weight Gainer Works
Serious weight gain takes serious calories, and that is exactly the gap this mass gainer fills. A single shake delivers the kind of calorie and carbohydrate load that is hard to reach through whole foods alone, making it ideal for busy schedules, fast metabolisms or smaller appetites. The 50g of complete protein comes from whey concentrate to support muscle recovery, while added creatine and naturally occurring glutamine back up your strength work. There is no added sugar, so the carbohydrate comes primarily from complex sources to replenish glycogen after hard sessions.
Ideal For
This 6 lb tub provides around 16 full servings and suits hard gainers, bulking athletes and anyone who struggles to eat enough calories to grow. Because each serving is large, a blender or shaker with a wide neck works far better than a standard bottle. Pair it with regular resistance training three to five times a week and a balanced whole-foods diet for best results. The formula contains milk and soy ingredients, so it is not suitable for those with milk or soy allergies. As with any supplement, consult a healthcare provider before use if you have underlying health conditions.
1. Add two heaping scoops (about 340g) to a blender with 600ml to 700ml of cold water, milk or your preferred beverage.
2. Blend for 45 to 60 seconds; add ice or extra calorie-dense ingredients like fruit or peanut butter if you want a bigger shake.
3. New users should start with half a serving (one scoop) daily for the first week, then build up gradually.
4. Use post-workout, between meals or before bed to keep calories and protein topped up through the day.
Each two-scoop (340g) serving mixed with water delivers:
• 1,250 calories per serving in water (around 1,640 when made with low-fat milk)
• 50g of protein from fast-digesting whey protein concentrate
• Over 250g of carbohydrates with no added sugar
• Around 5g of creatine to support strength and power output
• Roughly 8g of naturally occurring glutamine and glutamine peptides
• 25 vitamins and essential minerals, including choline and inositol