Get an extra 20% off £20 on Vitamins & Supplements

Use Code: VITS20


Discover the latest natural beauty products

Optimum Nutrition Serious Mass Powder Chocolate Mint 5.5kg

£48.00 + Free Standard Delivery

Optimum Nutrition Serious Mass Powder Chocolate Mint 5.5kg
Online Only
Optimum Nutrition Serious Mass Powder Chocolate Mint 5.5kg

Optimum Nutrition Serious Mass Powder Chocolate Mint 5.5kg

£48.00 + Free Standard Delivery

Delivery Options

4h 4m 22s left for next day delivery


Optimum Nutrition Serious Mass

  • For Muscle Building & Weight Gain
  • More than 1260 kcal per serving to help boost your calorie intake
  • 50 g protein per serving to help build and maintain muscle

Serious weight gain requires serious calories. However, those who need the extra calories most often have the toughest time consuming enough of them. For many aspiring to be bigger, SERIOUS MASS is the ultimate in weight gain formulas. With 1,250 calories per serving to boost daily calorie intake, 50g high protein to support muscle growth and repair, over 250g carbohydrates, and now with 3 g added Creatine to support performance per serving, you’ve got nothing to lose and lots to gain. It is time to stop thinking small and get serious – SERIOUS MASS

Use Anytime, it is quick, convenient and easy to prepare. Serious Mass is ideal between meals, after weight training as part of your recovery routine and before bed. Just mix two scoops of Serious Mass (334g) with 710ml of water to create a tasty, calorie-packed shake.

Nutritional Information

Per 100g / 330g serving
Energy (kJ) 1605kJ / 5297kJ
Energy (kcal) 384kcal / 1266kcal
Fat 1.9g / 6.2g
Of which saturates 1g / 3.2g
Carbohydrate 76g / 252g
Of which sugars 7.8g / 26g
Fibre 0.2g / 0.6g
Protein 15g / 50g
Salt 1g / 3.4g
Vitamin A 92.7µg / 306µg
Vitamin D 0.59µg / 1.9µg
Vitamin E 1.1mg / 3.6mg
Vitamin C 6.8mg / 22mg

Additional Info


STORE IN A COOL, DRY PLACE. be used in the framework of a varied and balanced diet and a healthy lifestyle.


Always read the label

Maltodextrin, WHEY Protein Concentrate [MILK], Calcium CASEINATE [MILK], Fat-Reduced Cocoa Powder, Creatine Monohydrate, Flavourings, MILK Mineral Complex, Medium Chain Triglycerides [MILK], EGG Albumen, Sodium Chloride, Dipotassium Phosphate, Vitamin & Mineral Blend (Sodium L-Ascorbate, Ferric Pyrophosphate, D-Alpha-Tocopheryl Acetate, Nicotinamide, Zinc Oxide, Retinyl Acetate, Calcium D-Pantothenate, Sodium Fluoride, Manganese Sulphate, Potassium Iodate, Cyanocobalamin, D-Biotin, Chromium (III) Chloride, Pteroylmonoglutamic Acid, Cholecalciferol, Sodium Selenite, Cupric Citrate, Pyridoxine Hydrochloride, Thiamine Hydrochloride, Phylloquinone, Riboflavin, Sodium Molybdate), Glutamine Peptides [WHEAT GLUTEN], L-Glutamine, Magnesium Oxide, WHEY Powder [MILK], Inositol, L-Ascorbic Acid, Sweetener (Sucralose), Antioxidant (Tocopherol-Rich Extract), Calcium D-Pantothenate, Pteroylmonoglutamic Acid.

Advisory information:

May Contain: Soy, Nuts and Peanuts.

Remember to:

We go to great efforts to ensure that the information on this page is accurate at the time that the page was last edited. As we are constantly reviewing and developing our products to meet our consumer needs, consumers, particularly those that suffer from allergies and intolerances, should always check product labelling, warnings, and directions provided with the product that is delivered, prior to use or consumption.

Customer Reviews