Critical Mass Professional Lean Mass Gainer Vanilla 6kg (40 Servings)
by Applied Nutrition
Applied Nutrition Critical Mass Professional is a high-calorie lean mass gainer delivering over 1,000 calories and 42g of protein per 150g serving, built around ISO-XP 95% Whey Protein Isolate with added creatine, HMB, leucine, glutamine, CLA, and MCT powder. Best for Hard gainers struggling to achieve a consistent caloric surplus and Athletes in structured bulking or off-season mass phases.
According to the AIScored 0–100 scoring system, Critical Mass Professional Lean Mass Gainer Vanilla 6kg (40 Servings) by Applied Nutrition scores 71.0/100, ranking #5 out of 23 products in Mass Gainers (2026). Strongest category: Value For Money (76.0/100). Weakest: Side Effects (62.0/100).
Is Critical Mass Professional Lean ... worth buying?
“Applied Nutrition's Critical Mass Professional delivers over 1,000 calories per 150g serving with 42g of ISO-XP 95% Whey Protein Isolate, which is exactly what hard gainers need when they're struggling to eat enough. At 71/100, the formula also includes creatine monohydrate and HMB for performance, though the price per serving is worth checking before you commit.”
What Do Reviewers Say About Critical Mass Professional Lean Mass Gainer Vanilla 6kg (40 Servings)?
Sample excerpts from currently available source material used in this product analysis.
"Applied Nutrition Critical Mass Gainer Review: Solid Choice for Bulking ⭐⭐⭐⭐☆ Looking to pack on muscle? Applied Nutrition's Critical Mass Professional Lean Mass Gainer is a solid option. This vanilla-flavored gainer delivers over 1,000 cal..."
"Disgusting is like a medicine 🤢🤢💊 dont try it cuz look nice just from the packaging"
"Hi everyone one, I did not like the test , the test is not like chocolate, ,I bought the same powder Before but test of this product its not the same as previous one ."
"Great tasting with minimal sugars in it.. Helped me gain back size n strength after a Hip Replacement surgery and losing my appetite for 2 weeks and losing 14lb / a stone.. 😱"
"1st batch of this I had was quite nice, 2nd batch tastes really chemically… kinda put me off future purchases"
How does Critical Mass Professional Lean Mass ... score?
Detailed score breakdown and key findings from our analysis of 11 reviews across 2 sources.
Pros
- +Over 1,000 calories per serving — highly efficient caloric surplus for hard gainers
- +Premium protein source: ISO-XP 95% Whey Protein Isolate at 42g per serving
- +Evidence-based performance additions: creatine monohydrate, HMB, leucine, and glutamine
- +Reduced-sugar formulation compared to conventional mass gainers
- +Informed Sport registered and Halal certified — reassuring for competitive athletes and dietary requirements
Cons
- -Batch-to-batch flavour inconsistency reported — some users find later purchases taste synthetic or chemical
- -Large 150g serving size can clump without a blender; shaker alone may not suffice
- -Contains milk, soy, and wheat — unsuitable for those with common allergens
- -Very high caloric density requires careful tracking to avoid unwanted fat gain
Best For
Watch Out
- !Flavour may vary noticeably between production batches — check recent reviews before reordering
- !Allergen risk: milk, soy, and wheat present — not suitable for intolerant users
- !150g serving is a significant digestive load; start with a half-serving to assess tolerance
- !Total daily calorie intake should be monitored — 1,000+ kcal per shake can easily push surplus beyond lean mass range
What is Critical Mass Professional Lean Mass Gainer Vanilla 6kg (40 Servings)?
Critical Mass Professional Lean Mass Gainer Vanilla 6kg (40 Servings) is a mass gainers product by Applied Nutrition in powder form, scoring 71.0/100 on AIScored.
- • Applied Nutrition Critical Mass Professional Lean Mass Gainer Vanilla 6kg (40 Servings) The UK's most trusted mass gainer for serious size & strength – Critical Mass Professional is the ultimate high-calorie weight gainer.1,000+ calories per serving – packed with high-quality protein & carbs – delivers a caloric surplus essential for lean muscle gain.Powerful creatine & glutamine complex for performance & recovery – enhanced with creatine monohydrate.Optimal weight gain formula for hard gainers & athletes.Easy mixing & delicious flavours for maximum enjoyment – designed for convenience, this instantized protein powder mixes effortlessly in water or milk, creating a smooth, creamy texture with no lumps or grittiness.Informed Sport Registered & Halal Certified.Added HMB, Glutamine, Leucine & Creatine Matrix.
- • Added Fats: CLA & MCT Powder.
- • Critical Mass is quite simply the UK's favourite and trusted mass gain supplement, it uses the highest quality of ingredients, all of which have been carefully selected for the ability to deliver quality Lean Mass Gainz allowing you to rack up the calories for your daily count.New reduced sugar formulation contains 42g of both fast and slowly digested proteins per serving including ISO-XP 95% Whey Protein Isolate.
- • UK: Applied Nutrition Limited, Trio, Acornfield Road, Knowsley, L33 7UGEU: Applied Nutrition Limited, Unit 495, Moat House, 54 Bloomfield Avenue, Belfast, BT5 5AD.
Is Critical Mass Professional Lean Mass Gainer Vanilla 6kg (40 Servings) Independently Tested?
No Third-Party Testing Visible
We could not find evidence of independent third-party testing for this product. This doesn't mean it's unsafe, but independent verification provides additional assurance.
How We Score Supplements
Our methodology analyses review data, ingredient science, and product information, then scores each product on a 0-100 scale across evidence-based categories:
Effectiveness
How well the product delivers its claimed benefits, based on reviews and ingredient evidence.
Ingredient Quality
Bioavailable forms, clinically effective dosages, clean label, minimal fillers.
Value for Money
Price relative to ingredient quality, dosage count, and effectiveness.
Side Effects Profile
Higher score = fewer side effects. 100 means virtually no adverse reactions reported.
Certifications & Testing
Third-party lab testing, GMP certification, and independent quality verification.
Overall Score
Weighted combination of all factors. Our bottom-line recommendation.
How Does Critical Mass Professional Lean Mass Gainer Vanilla 6kg (40 Servings) Compare?
See how this product stacks up against the top-rated mass gainers in our database.
| Product | Score | Price |
|---|---|---|
| Critical Mass Professional Lean ... (this) | 71.0 | £62.76 |
| Critical Mass Professional Lean ... | 80.0 | £40.00 |
Price History (90 days)
Quick Facts
- Form
- Powder
- Serving
- 150 g
- Vegan
- No
Frequently Asked Questions
Is Critical Mass Professional Lean Mass Gainer Vanilla 6kg (40 Servings) worth buying in 2026? ▼
What is the best price for Critical Mass Professional Lean Mass Gainer Vanilla 6kg (40 Servings) in the UK? ▼
What are the pros and cons of Critical Mass Professional Lean Mass Gainer Vanilla 6kg (40 Servings)? ▼
Is Critical Mass Professional Lean Mass Gainer Vanilla 6kg (40 Servings) third-party tested? ▼
How does Critical Mass Professional Lean Mass Gainer Vanilla 6kg (40 Servings) compare to Critical Mass Professional Lean Mass Gainer Banana 2.4kg (16 Servings)? ▼
Disclaimer: AIScored provides research-backed summaries based on publicly available reviews and product information. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Affiliate links may earn us a commission at no extra cost to you.
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