Mass Gainer Protein Powder
by Warrior
Calories that count: a high-protein, high-carb formula built for serious muscle and weight gain.
- Up to 61g protein per serving
- High calorie for bulking phases
- For shakes, smoothies, baking and more
Size5kg
Best price today
In stock£49.99
£1.00 / 100g
Secure retailer checkout
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Transparent protein profile
What's inside
Values per 100g, with the amount in one 280g serving
22g protein
61g per 280g serving
64g carbohydrates
180g per 280g serving
3g fat
9.2g per 280g serving - moderate fat
378 kcal
1058 kcal per 280g serving
View full nutritional information
| Nutrient | Per 100g | Per serving (280g) |
|---|---|---|
| Protein | 21.8g | 61g |
| Calories | 378 kcal | 1058 kcal |
| Carbohydrates | 64.3g | 180g |
| Fat | 3.3g | 9.2g |
Know when to buy
Price history
Lowest price on record, any flavour or size
£0.52/100g (£25.99 for 5kg on 1 Jul 2026)
5kg · all flavours · price per pack
- Warriorlatest £39.99, lowest £39.99, highest £47.70 in the last 90 days
- Amazon UKlatest £49.99, lowest £46.30, highest £49.99 in the last 90 days
Quick answers
Is this right for you?
Who is it for?
Warrior Mass Gainer Protein Powder is designed for hard-gainers and anyone in a dedicated bulking phase who struggles to eat enough calories. Mass gainers combine protein with carbs and calories to support weight gain and muscle growth during intense training blocks.
What can you expect?
A calorie-dense shake designed to help you gain weight. Mass gainers pack protein alongside a significant amount of carbohydrates and calories per serving. Servings tend to be larger than standard protein powders, so expect thicker shakes and bigger scoops. With 21.8g of protein per 100g (around 61g per 280g serving), Warrior Mass Gainer Protein Powder sits in a competitive position for a mass gainer product.
What else do you need to know?
Warrior Mass Gainer Protein Powder is a mass gainer protein powder made by Warrior. It comes in 5kg sizes, and WheyWise tracks prices across 2 UK retailers so you can always find the best deal. Every price on WheyWise is read from the retailer’s own page and re-checked daily and sorted by cost per 100g, so you can see both the cheapest option and how current it is. All links to Amazon and retailer sites are affiliate links - this is how WheyWise stays free.
Frequently asked questions
Where is the cheapest place to buy Warrior Mass Gainer Protein Powder in the UK?
We refresh Warrior Mass Gainer Protein Powder pricing daily from Amazon UK and show the fetch time next to every figure. If no verified price is showing above, we do not currently hold one we would stand behind, and the buy button will take you to the live listing to check.
How much protein does Mass Gainer Protein Powder contain per 100g?
Mass Gainer Protein Powder contains 21.8g of protein per 100g, with 61g per 280g serving. It is a mass gainer product.
Is Warrior Mass Gainer Protein Powder currently in stock?
At the last check, 6 out of 8 tracked variants were in stock. Stock status carries the same fetch time as the price shown above, so check the retailer listing before ordering.
Pick your pack
1 size · any flavour · cost per 100g for each
Where to buy in the UK
5kg · 8 offers for this selection · sorted by cost per 100g
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