Massive Mass Gainer
by Prozis
Calories that count: a high-protein, high-carb formula built for serious muscle and weight gain.
- 13g protein per 100g
- High calorie for bulking phases
- For shakes, smoothies, baking and more
Flavour pictures illustrate the taste, not the powder's colour or ingredients.
Size2.27kg
Best price today
In stock£18.63
£0.82 / 100g
We may earn a commission at no extra cost to you. Affiliate disclosure
Transparent protein profile
What's inside
Values per 100g
13g protein
Protein per 100g of product
73g carbohydrates
Carbohydrates per 100g of product
5g fat
Moderate fat content
391 kcal
Energy per 100g of product
View full nutritional information
| Nutrient | Per 100g |
|---|---|
| Protein | 13g |
| Calories | 390.88 kcal |
| Carbohydrates | 73g |
| Fat | 5.2g |
Know when to buy
Price history
Lowest price on record, any flavour or size
£0.82/100g (£18.63 for 2.27kg on 13 Oct 2026)
2.27kg · all flavours · price per pack
- Prozislatest £18.63 (one check so far)
Quick answers
Is this right for you?
Who is it for?
Prozis Massive Mass Gainer 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 13g of protein per 100g, Prozis Massive Mass Gainer sits in a competitive position for a mass gainer product.
What else do you need to know?
Prozis Massive Mass Gainer is a mass gainer protein powder made by Prozis. It comes in 2.27kg sizes. 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 Prozis Massive Mass Gainer in the UK?
The best price we have verified today is £0.82 per 100g for the 2.27kg bag, checked 13 Oct 2026. Use the buy button above to go straight to it.
How much protein does Massive Mass Gainer contain per 100g?
Massive Mass Gainer contains 13g of protein per 100g. It is a mass gainer product.
Is Prozis Massive Mass Gainer currently in stock?
At the last check, 3 out of 3 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 · Banana-Strawberry · cost per 100g for each
Where to buy in the UK
Banana-Strawberry · 2.27kg · 1 offer for this selection · sorted by cost per 100g
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