Optimum Nutrition Serious Mass Protein Powder 5.45kg
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BANANA
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CHOCOLATE PEANUT BUTTER
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CHOCOLATE
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CHOCOLATE MINT
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COOKIES & CREAM
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STRAWBERRY
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VANILLA
PICK AND MIX 10+ INDIVIDUAL PRODUCTS FOR UP TO 15% OFF!
| QUANTITY | DISCOUNT |
| PICK&MIX 10+ | 5% OFF |
| PICK&MIX 20+ | 10% OFF |
| PICK&MIX 30+ | 15% OFF |
The Serious Mass Gainer formula supports muscle growth and repair utilising 50-grams of quality whey protein blend and 256-grams of carbohydrates per serving to provide long-lasting energy and boost daily calorie intake. Fats and saturates are kept low to maintain a supreme macronutrient profile with just 4.7-grams within a 340-gram shake.
Produced by Optimum Nutrition, the large 5.45kg Serious Mass packs are easily resealable and come with 16 large servings to keep you fuelled throughout your busy day. Coming in six tasty flavours including the special edition, Chocolate Mint, there's something suited to everyone's tastebuds.
- 5450g = 16 servings
- 340g = 1 serving
Ingredients: Maltodextrin, WHEY Protein Concentrate [MILK], Calcium CASEINATE [MILK], Flavourings, Cookie Crumb (1.4%) (WHEAT Flour [GLUTEN], Sugar, Vegetable Fats: Palm, Rapeseed; Fat-Reduced Cocoa Powder, Sodium Chloride), Creatine Monohydrate, MILK Mineral Complex, Medium Chain Triglycerides [MILK], EGG Albumen, Dipotassium Phosphate, Sodium Chloride, 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.
For allergens, see ingredients in uppercase.
The ingredients list and allergens are based on the Cookies and Cream Optimum Nutrition Serious Mass Gainer Protein Powder and can vary slightly depending on the flavour selected.
Regulated Name: Ready To Mix Powder with Protein, Carbohydrates, Vitamins, Minerals and Sweetener.
| Typical Values Per | 340g | 100g |
| Energy (Calories) | 1267kcal | 379kcal |
| Fat | 4.7g | 1.4g |
| Of Which Saturates | 1.8g | 0.5g |
| Carbohydrate | 256g | 77g |
| Of Which Sugars | 26g | 7.9g |
| Protein | 50g | 15g |
| Salt | 1.59g | 0.48g |
| Creatine | 3g | 0.9g |
| Vitamin A | 640μg | 192μg |
| Vitamin D | 4μg | 1.2μg |
| Vitamin E | 9mg | 2.7mg |
| Vitamin K | 75μg | 22μg |
| Vitamin C | 60mg | 18mg |
| Vitamin B6 | 1.1mg | 0.3mg |
| Vitamin B12 | 7.4μg | 2.2μg |
The nutritional information is based on the Banana Serious Mass Gainer Optimum Protein Powder and might vary slightly on other flavour variations.
For the best results, consume Optimum Nutrition Serious Mass shakes between meals when you need extra calories or after your workout to support your recovery.
Mix two heaped scoops with 710ml of water or milk then add a few ice cubes and, if desired, other calorie-contributing ingredients and blend well.
- Weight: 5450g-Grams
- Barcode: 5060245601061
- Production Country: United Kingdom
- Storage: Store protein in a cool, dry place away from direct sunlight
- Brand: Optimum Nutrition
- Type: Protein Powder
First of all, from our small family business to your family, we wish you a lovely festive period ahead!
The information below supersedes all other delivery information and T&Cs on the website, so it is very important that this is clearly understood before placing any order.
For delivery estimated before Christmas Day, the courier companies are recommending ordering by 3pm Thursday 18th December, for an estimated delivery attempt before Christmas Day on all delivery services (express and standard).
This is not guaranteed by the couriers and rather a best estimate, therefore, we highly recommend ordering well before the cut-off just in case there are any unexpected delays with your order and goods need to be replaced or reshipped, allowing us the time to arrange that before 3pm Thursday 18th December.
Orders placed after Thursday 18th December 3pm will still be dispatched up until 3pm Monday 22nd December and could likely still arrive before Christmas Day, but are outside of the courier's current advice.
We will then be closing the entire business (including customer services) from Christmas Eve at midday until 8am Friday 2nd January 2026.
This means any orders placed after 3pm Monday 22nd December might not be dispatched until Friday 2nd January 2026. Please bear this in mind, as that is 11 days during which no dispatching or courier collections from us will take place.
It is very important that you only place an order after reading the above, as we will not be able to cancel orders placed during this period, as the system will be auto-generating shipment labels for our reopening on Friday 2nd January 2026.
PICK AND MIX 10 = £53.19
PICK AND MIX 20 = £50.39
PICK AND MIX 30 = £47.59
With the Protein Package discount system, you can get up to 20% off your order when you pick and mix any ten or more products across the website!
The discount code will automatically be applied on the cart page, find out more or see the full pick and mix range.
We endevour to dispatch all UK orders on the same day as they are placed including weekend. Please be aware that during busy periods such as Christmas and Black Friday it may take longer to receive your order. Deliveries should be stress-free, that's why all of our services are fully trackable. Here are our current UK shipping rates:
Standard Delivery (Est. 2 - 3 working days)
- 0.0 kg - 2.0 kg : £2.99
- 2.0 kg - 10.0 kg : £3.99
- 10.0 kg - 60.0 kg : £4.99
Express Delivery (Est. 1-2 working days)
- 0.0 kg - 2.0 kg : £5.99
- 2.0 kg - 30.0 kg : £6.99
Delivery time frames are estimated and not guaranteed. Further information about our UK and international shipping services can be found here. All deliveries can be tracked by following the link in your shipping confirmation email. View our full shipping policy here.
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Great product and price!!
Fantastic company great service and fast delivery highly recommended
Ordered this many times never disapoints
good