£29.99
Optimum Nutrition Serious Mass Banana Weight Gainer 2.73kg
Availability: In stock · seller last confirmed 26 Oct 2026 · prices/stock on the seller’s site may change
Optimum Nutrition Serious Mass Banana 2.73kg is a high-calorie weight-gainer powder for adults who find it difficult to consume enough calories through meals alone. Each full 334g serving supplies 1,267 kcal, 50g of protein, 256g of carbohydrates and 3g of creatine, making it suitable after training or between meals.
Pack Contains
1 x 2.73kg tub of banana-flavour powder, providing approximately eight servings.
Key Features
1,267 kcal per full serving to support increased calorie intake
50g of protein per serving to support the growth and maintenance of muscle mass
256g of carbohydrates per serving
3g of creatine per serving
Contains added vitamins and minerals
Banana flavour with sweetener
Product Details
Brand: Optimum Nutrition
Range: Serious Mass
Flavour: Banana
Format: Ready-to-mix powder
Net weight: 2.73kg
Serving size: 334g, approximately two heaped scoops
Servings: Approximately 8
Ingredients / Composition
Maltodextrin, whey protein concentrate (milk), calcium caseinate (milk), flavourings, creatine monohydrate, milk mineral complex, medium-chain triglycerides (milk), egg albumen (egg), dipotassium phosphate, sodium chloride, colour (curcumin), vitamin and mineral blend, glutamine peptides (wheat gluten), L-glutamine, magnesium oxide, whey powder (milk), inositol, L-ascorbic acid, sweetener (sucralose), antioxidant (tocopherol-rich extract), calcium D-pantothenate and folic acid.
Allergy Advice
Contains milk, egg and wheat gluten. May contain soya, nuts and peanuts. Always check the packaging before use, as formulations may change.
Nutrition
Typical values
Per 100g
Per 334g serving
Energy
1588kJ / 379kcal
5303kJ / 1267kcal
Fat
1.4g
4.7g
of which saturates
0.5g
1.8g
Carbohydrate
77g
256g
of which sugars
7.9g
26g
Protein
15g
50g
Salt
0.48g
1.59g
Creatine
0.9g
3g
Directions
Add 334g, approximately two heaped scoops, to a blender containing 710ml of cold water. Blend for 30–45 seconds. New users may prefer to begin with one scoop before gradually increasing to a full serving.
Warnings / Storage
Use as part of a varied, balanced diet and healthy lifestyle. Store in a cool, dry place and keep the container tightly closed. Best before end and batch number: see container.
Frequently Asked Questions
How many servings are in the tub?
Each 2.73kg tub contains approximately eight 334g servings.
When can Serious Mass be used?
It can be consumed between meals when additional calories are required or after training.
Does it contain creatine?
Yes. A full 334g serving provides 3g of creatine.
Optimum Nutrition Serious Mass Banana offers a convenient way to add substantial calories, protein and carbohydrates to a structured nutrition plan. The large 2.73kg tub is ideal for adults following demanding strength-training or bulking programmes.
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