Optimum Nutrition Serious Mass 5kg Description
Optimum Nutrition Serious Mass is a high-calorie weight gain formula designed to help increase daily calorie intake. Each serving provides around 1,250 calories, 50g protein, over 250g carbohydrates, and 3g added creatine to support performance.
Optimum Nutrition Serious Mass 5kg Key Benefits
- Supports muscle building and weight gaining goals
- Over 1250 kcal per serving to help boost calorie intake
- 50g protein per serving
- Over 250g carbohydrates per serving to support recovery
Optimum Nutrition Serious Mass 5kg Recommended Usage
Add 2 heaping scoops to a blender with 710ml of water. Blend for 30 to 45 seconds.
When to Use Optimum Nutrition Serious Mass
- Post-workout: Use within 30 minutes after training.
- Between meals: Add calories and nutrients to support a surplus.
- Before bed: Use to provide additional nutrition overnight.
Why Choose Optimum Nutrition Serious Mass?
Serious Mass is ideal for those with a high metabolism, smaller appetite, or busy lifestyle who struggle to reach calorie targets through whole foods alone.
*Carbohydrates contribute to the recovery of normal muscle function after highly intensive and/or long-lasting physical exercise. Protein contributes to the growth and maintenance of muscle mass.
Optimum Nutrition Serious Mass Nutritional Information
Based on Strawberry flavour
| Nutrient | Per 100g | 2 scoops (335g) |
|---|---|---|
| Energy | 1573kJ / 376kcal | 5269kJ / 1259kcal |
| Fat | 1.8g | 6.2g |
| of which saturates | 1.0g | 3.4g |
| Carbohydrate | 75g | 250g |
| of which sugars | 3.7g | 12g |
| Protein | 15g | 50g |
| Salt | 0.56g | 1.88g |
Optimum Nutrition Serious Mass Ingredients
Ready to mix powder with protein, carbohydrates, vitamins and minerals, with sweetener.
Corn maltodextrin, whey protein concentrate (milk), emulsifier (lecithins (contains soy)), flavourings, creatine monohydrate, milk mineral complex, beetroot concentrate, salt, minerals, vitamins, stabilisers (cellulose gum, guar gum, carrageenan), sweetener (sucralose).
Allergy Advice
For allergens, see ingredients in bold. May contain traces of gluten, egg, nuts and peanuts.
Storage Advice
After opening, close tightly. Store in a cool, dark place. For batch code and best before end, see packaging.
Optimum Nutrition Serious Mass 5kg FAQ
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Who is Serious Mass best for?
It is ideal for people who struggle to gain weight, have a high metabolism, or find it difficult to hit calorie targets with food alone.
Do I need to take the full 2 scoops?
Not necessarily. You can start with a half serving to assess tolerance and gradually increase based on your calorie needs.
Is it only for post-workout?
No. You can also use it between meals or before bed to help maintain a calorie surplus.
Does it contain creatine?
Yes, it includes added creatine (3g per serving in your description).
Will it make me gain fat?
Weight gain depends on your overall calorie surplus. Pair it with structured training and adjust serving size to match your goals.
