- High-Calorie Support: Each serving delivers 1,250 calories (when mixed with water) or up to 1,640 calories (when mixed with low-fat milk), making it ideal for hard gainers or those needing extra energy for demanding workout regimens.
- Muscle Growth & Recovery: Contains 50g of protein and over 250g of carbohydrates per serving, supporting muscle protein synthesis and replenishing glycogen stores post-workout.
- Essential Micronutrients: Fortified with 25+ vitamins and minerals, plus creatine, L-glutamine, choline, inositol, and PABA to support overall health, energy, and recovery.
- No Added Sugar: Delivers complex carbohydrates without unnecessary sugar additions.
- Customizable and Versatile: Easily blended with a variety of foods to tailor caloric intake as per individual goals.
Individual results may vary. This product is not intended to diagnose, treat, cure, or prevent any disease. Consult your healthcare provider prior to use.
Optimum Nutrition Serious Mass is ideal for:
- Individuals seeking substantial calorie and nutrient support to aid in muscle gain or recovery
- Hard gainers with fast metabolisms who struggle to gain or maintain weight through food alone
- Athletes or bodybuilders engaged in intense training requiring rapid refueling and muscle repair
- Those with higher caloric demands due to active lifestyles
Not recommended for: Individuals under 18, pregnant or nursing women, or those with diabetes, hypoglycemia, or known/suspected medical conditions without consulting a healthcare provider. Always seek medical advice before beginning any supplement program. Individual needs and tolerances may vary.
For best results, add 2 scoops (336g) of Serious Mass powder to 24 oz (about 700ml) of water or juice using a blender. Mix for 45-60 seconds. You may enhance your shake's calorie content by adding fresh or frozen fruits, peanut butter, nuts, or other calorie-dense foods. For new users, it is recommended to start with 1/2 serving daily for the first week and gradually increase to 1 or more full servings several times a day.
Suggested timing:
- Between meals: Consume 1/2–1 serving to maintain a positive nitrogen balance and support high-calorie intake.
- Post-workout: Take 1/2–1 serving within 30–45 minutes of exercise to facilitate muscle recovery.
- Before bed: Drink 1/2–1 serving about 45–60 minutes before sleeping to help provide nutrients to recovering muscles overnight.
For optimal results, combine Serious Mass with regular, intense weight training and a balanced whole-foods diet. Allow at least 48 hours between workouts involving the same muscle groups for sufficient recovery.
Consult your healthcare provider before starting any supplement regimen. Not suitable for use by pregnant or nursing women, children under 18 years, or individuals with certain health conditions.