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Muscle building support, Calorie and weight gain support, Post-workout recovery, Energy metabolism, Electrolyte support
Active adults aiming to increase daily calories and protein intake, or strength trainers looking to support weight and muscle gain goals.
Mix 340 g (about 2 heaping scoops) with 24 fl oz of cold water, milk, or another beverage and blend 30–45 seconds; new users may start with 1/2 serving daily for a week, then increase to 1 serving a day; take regularly over time with resistance exercise; taking with milk or a carb-containing meal can make large servings easier to tolerate.
Contains: Milk, Soy
Provides essential amino acids, including BCAAs, that are rapidly digested to support muscle protein synthesis after training.
Caution: Contains milk; those with dairy sensitivity may experience digestive discomfort.
Supplies fast-digesting carbohydrates that replenish muscle glycogen and increase overall calorie intake.
Caution: High carbohydrate load may not fit low-carb diets and can spike blood sugar in some individuals.
Increases phosphocreatine stores in muscle, which may support short-duration, high-intensity power output.
Caution: Stay well hydrated, as creatine draws water into muscle cells and inadequate fluids may cause cramping.
Provides micronutrients that participate in energy metabolism, muscle function, and antioxidant support.
Caution: Do not combine with multiple multivitamins to avoid excessive intakes of certain nutrients.
Contribute to electrolyte balance involved in muscle contraction and fluid regulation during training.
Caution: Those monitoring sodium or potassium intake should account for these amounts in their daily totals.
Fast-digesting whey protein supplies amino acids for muscle protein synthesis, while maltodextrin delivers quick carbohydrates to restore glycogen and raise calorie intake. Creatine supports short-burst performance, and the vitamin-mineral blend with electrolytes helps cover micronutrient and hydration needs that are relevant for intense training.
Label Warning: Consult a physician before use if you take any medications or are under medical care. Not for use if you are under 18, pregnant, trying to become pregnant, or nursing.
Who should be cautious: People with milk or soy allergies should avoid due to milk and soy ingredients. Those monitoring cholesterol, sodium, or added sugars may want to review the nutrition facts. Individuals on medications that interact with iron, calcium, or magnesium may need to separate dosing to avoid reduced absorption; discuss timing with a healthcare provider.
Storage: Store in a cool, dry place.
Many users say they gained weight and felt muscle support when used consistently with workouts.
Vanilla flavor is liked and mixes well with fruits and nuts for enjoyable shakes.
Some reviewers mention it does not dissolve easily and needs extra shaking or stirring.
This product is guaranteed authentic and backed by our easy returns & refunds policy. Details
Creatine may enhance muscle growth and strength, complementing mass gainers for effective muscle building.
AI generated. Not medical advice.
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Why Serious Mass™?
With two heaping scoops, you get ...
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 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.
For best results, consume 2 scoop serving regularly over time in combination with regular resistance exercise.
Maltodextrin, whey protein concentrate, natural and artificial flavor, sunflower and/or soy lecithin, acesulfame potassium, sucralose.
Contains: milk and soy.
This product contains ingredients of international and U.S. origin.
Contents sold by weight not volume. Some settling will occur.
Store in a cool, dry place.
Serving scoop included. But may settle to the bottom during shipping.
Consult your physician before using this product if you are taking any medications or are under a physician's care for a medical condition. Not for use by those under the age of 18 or women who are pregnant, trying to get pregnant, or are nursing.
While iHerb strives to ensure the accuracy of its product images and information, some manufacturing changes to packaging and/or ingredients may be pending update on our site. Although items may occasionally ship with alternate packaging, freshness is always guaranteed. We recommend that you read labels, warnings and directions of all products before use and not rely solely on the information provided by iHerb.
| Supplement facts | ||
| Serving Size: 340 g (About 2 Heaping Scoops) | ||
| Servings Per Container: 8 | ||
| Amount Per Serving | %Daily Value | |
| Calories | 1260 | |
| Total Fat | 5 g | 6%* |
| Saturated Fat | 3 g | 15%* |
| Cholesterol | 200 mg | 67% |
| Total Carbohydrate | 253 g | 92%* |
| Total Sugars | 30 g | ** |
| Includes 8 g Added Sugars | 16%* | |
| Protein | 50 g | 100%* |
| Vitamin A (as vitamin A acetate) | 340 mcg | 38% |
| Vitamin C (as sodium ascorbate) | 30 mg | 33% |
| Vitamin E (as dl-alpha tocopheryl acetate) | 4 mg | 27% |
| Thiamin (as thiamin hydrochloride) | 0.4 mg | 33% |
| Riboflavin | 0.9 mg | 69% |
| Niacin (as niacinamide) | 4 mg | 25% |
| Vitamin B6 (as pyridoxine hydrochloride) | 0.4 mg | 4% |
| Folate (as folic acid) | 170 mcg DFE (100 mcg folic acid) | 43% |
| Vitamin B12 (as cyanocobalamin) | 1.6 mcg | 67% |
| Biotin (as d-biotin) | 60 mcg | 200% |
| Pantothenic Acid (as d-calcium pantothenate) | 3 mg | 60% |
| Calcium (as calcium carbonate, calcium phosphate) | 700 mg | 54% |
| Iron (as ferrous fumarate) | 5.8 mg | 32% |
| Iodine (as potassium iodide) | 23 mcg | 15% |
| Magnesium (as magnesium phosphate) | 140 mg | 33% |
| Zinc (as zinc oxide) | 3 mg | 27% |
| Copper (as copper gluconate) | 0.4 mg | 44% |
| Manganese (as manganese sulfate) | 0.4 mg | 17% |
| Sodium | 680 mg | 30% |
| Potassium | 940 mg | 20% |
| Creatine Monohydrate | 5 g | ** |
| *Percent Daily Values are based on a 2,000 calorie diet. ** Daily Value not established. | ||
