RRP £42.99
Save £10.00

Serious Mass is the ultimate in weight gain formulas. Serious Mass supplies you with the tools you need to pack on the pounds and develop the physique you've always wanted

Full description


Optimum Nutrition Serious Mass

Serious Mass is the ultimate in weight gain formulas. Serious Mass supplies you with the tools you need to pack on the pounds and develop the physique you've always wanted.

1263 Calories per serving in water

Over 250 g of carbohydrates - 

Includes Creatine, L-glutamine & Glutamine peptides

Source of protein: contains 50 g of protein per serving

Nutritional Info Per 334g Servings (Based On Chocolate Flavour)

Energy 5284kj/ 1263 kcal, Fat 5.5g of which saturates 2.4g, Carbohydrate 251g of which sugars 26g, Fibre 3.2g, Protein 50g, Salt 1.56g, Vitamin A 640ug 80%, Vitamin D 4ug 80%, Vitamin E 9.0mg 75%, Vitamin K 75ug 100%, Vitamin C 64mg 80%, Thiamin 0.89mg 81%, Riboflavin 1.1mg 82%, Niacin 13mg 81%, Vitamin B6 1.1mg 79%, Folic Acid 151ug 71%, Vitamin B12 7.4ug 294%, Biotin 37ug 75%, Pantothenic Acid 4.5mg 75%, Calcium 600mg 75%, Phosphorus 532mg 76%, Magnesium 27mg 76%, Iron 18mg, 129%, Zinc 11mg 106%, Cooper 1.4mg 136%, Manganese 2mg 100%, Fluoride 4.5mg 100%, Selenium 55ug 101%, Chromium 46ug 114%, Molybdenum 57ug 114% Iodine 150ug 100%

Creatine 3g  

Ingredients: Chocolate Flavour

Maltodextrin, WHEY Protein Concentrate [MILK], Calcium CASEINATE [MILK], Fat-Reduced Cocoa Powder, Creatine Monohydrate, Flavouring, 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.


Add two heaping scoops (334g) of serious mass to a blend with 650-750ml of cold water or milk.


Product Form
Primary Ingredients
Protein Quality
Isolate Concentrate Blend
Choose your Goal
Muscle Gain & Size, Lean Muscle & Definition,
Time of consumption
After Workout
Drug Tested for Sport
Special Offer

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We want you to be happy with every purchase you make. Accordingly, you may inspect the items you buy as if you were in one of our stores. However, whilst you are deciding whether to keep your purchases, you do have a statutory duty to take reasonable care of our goods. Therefore, please do not damage the items whilst you inspect them.

Where you have failed to take reasonable care of the goods, whether whilst in your possession or when returning them, we reserve the right to refund you in full less any amounts due by way of compensation to either repair the goods or to cover any loss.

If you wish to return a product you have purchased from our website, making note of any Non-returnable products, you may do so.

View or full Returns Policy here.

Customer reviews

5 / 5
4 reviews for Optimum Nutrition Serious Mass 2.73kg
eKomi customer reviews
Nikita Gambhir
Bought it for a friend and he really liked it
Rated 5 out of 5
Jane Grover
Using to help gain weight. Good product.
Rated 5 out of 5
Cristian Ohrenciuc
Very good and very tasty!
Rated 5 out of 5
Fatoumata Lewis
I love this shake it’s one of the cleanest shakes around I use it mainly for weight training it’s perfect and taste amazing !
Rated 5 out of 5