Critical Mass Professional Lean Mass Gainer
by Applied Nutrition
Calories that count: a high-protein, high-carb formula built for serious muscle and weight gain.
- Up to 42g protein per serving
- High calorie for bulking phases
- For shakes, smoothies, baking and more
Flavour pictures illustrate the taste, not the powder's colour or ingredients.
Best price
In stock£39.89
£0.66 / 100g
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Transparent protein profile
What's inside
Values per 100g, with the amount in one 150g serving
28g protein
42g per 150g serving
50g carbohydrates
74.7g per 150g serving
7g fat
10.1g per 150g serving - moderate fat
377 kcal
566 kcal per 150g serving
View full nutritional information
| Nutrient | Per 100g | Per serving (150g) |
|---|---|---|
| Protein | 28g | 42g |
| Calories | 377 kcal | 566 kcal |
| Carbohydrates | 49.8g | 74.7g |
| Fat | 6.7g | 10.1g |
Know when to buy
Price history
Lowest price on record, any flavour or size
£0.66/100g (£39.89 for 6kg on 17 Sept 2026)
6kg · all flavours · price per pack
- Amazon UKlatest £39.89, lowest £39.89, highest £69.87 in the last 90 days
Quick answers
Is this right for you?
Who is it for?
Applied Nutrition Critical Mass Professional Lean 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 28g of protein per 100g (around 42g per 150g serving), Applied Nutrition Critical Mass Professional Lean Mass Gainer sits in a competitive position for a mass gainer product.
What else do you need to know?
Applied Nutrition Critical Mass Professional Lean Mass Gainer is a mass gainer protein powder made by Applied Nutrition. It comes in 2.4kg, 6kg 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 Applied Nutrition Critical Mass Professional Lean Mass Gainer in the UK?
We refresh Applied Nutrition Critical Mass Professional Lean Mass Gainer 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 Critical Mass Professional Lean Mass Gainer contain per 100g?
Critical Mass Professional Lean Mass Gainer contains 28g of protein per 100g, with 42g per 150g serving. It is a mass gainer product.
Is Applied Nutrition Critical Mass Professional Lean Mass Gainer currently in stock?
At the last check, 4 out of 4 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
2 sizes · Vanilla · cost per 100g for each
The 6kg works out at £0.66 per 100g. The 2.4kg costs £1.22. Same powder, 1.8x the price per gram.
Where to buy in the UK
Vanilla · 6kg · 1 offer for this selection · sorted by cost per 100g
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