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Critical Mass Chocolate vs Optimum Serious Mass Choc Peanut Butter

Side-by-side comparison of scores, ingredients, prices and real customer feedback for Critical Mass Chocolate and Optimum Serious Mass Choc Peanut Butter.

Last verified: 19 Feb 2026 · Based on 8 reviews

70.0
Score Summary

Critical Mass Chocolate scores 70.0/100 vs Optimum Serious Mass Choc Peanut Butter at 70.0/100. Critical Mass Chocolate wins on side effects. Optimum Serious Mass Choc Peanut Butter is stronger on certifications.

How Do the Scores Compare?

Critical Mass Professional ...
Serious Mass Chocolate Pean...
Critical Mass Professional Lean Mass Gainer Chocolate 2.4Kg (40 Servings)
Critical Mass Professional ...
Applied Nutrition
Serious Mass Chocolate Peanut Butter 2.73kg
Serious Mass Chocolate Pean...
Optimum Nutrition
Overall Score 70.0 70.0
Effectiveness 80.0/100
Best
80.0/100
Best
Ingredient Quality 70.0/100
Best
70.0/100
Best
Value for Money 80.0/100
Best
80.0/100
Best
Side Effects 80.0/100
Best
70.0/100
Certifications 30.0/100 50.0/100
Best
Best Price £67.50 Holland & Barrett → £36.00 Holland & Barrett →
Cheapest
Form None powder
Dose None None
Third-Party Tested ✗ No ✗ No
Reviews Analysed 4 4

Critical Mass Professional Lean ...

Pros

  • Excellent taste and smooth mixing (all reviewers noted this)
  • 1,000+ calories per serving supports lean muscle gain efficiently
  • Well-tolerated by beginners and sensitive digestive systems
  • Good value for price point (noted by reviewers)

Cons

  • Not third-party tested or certified (no banned substance verification)
  • High calorie density may not suit users with smaller appetites or cutting phases
  • Only 4 reviews available; limited sample size for reliability assessment
  • May contain added sugars typical of mass gainers (nutritional label not provided)

Best For

Hard gainers seeking muscle growth Beginners new to mass gainers Athletes with higher caloric needs Individuals with sensitive digestive systems Budget-conscious fitness enthusiasts
View full review →

Serious Mass Chocolate Peanut Bu...

Pros

  • Extremely high calorie density (1,263 kcal/serving) designed specifically for muscle gain
  • Substantial protein content (50g per serving) with dual whey/casein blend for sustained release
  • Added creatine monohydrate (3g/serving) supports strength and performance
  • Complete micronutrient profile with 25 vitamins and minerals at therapeutic doses

Cons

  • Very high sugar content (26g per serving) unsuitable for those managing blood glucose
  • High sodium per serving (1.56g, 26% RDA) may concern sodium-sensitive individuals
  • Large serving size (334g powder + 710ml water) makes it inconvenient for on-the-go use
  • Contains multiple allergens: milk, soy, wheat, egg; not suitable for allergic individuals

Best For

Hard gainers struggling to consume sufficient calories Bodybuilders and strength athletes in muscle-building phases Post-workout recovery nutrition Individuals aged 18-45 with no blood glucose or sodium concerns
View full review →

Score Breakdown: Critical Mass Chocolate vs Optimum Serious Mass Choc Peanut Butter

Critical Mass Chocolate Winner 70.0/100

Applied Nutrition Critical Mass Professional is a high-calorie lean mass gainer delivering 1,000+ calories per serving with protein, carbs, creatine, and glutamine.

Effectiveness
Critical Mass Pr..
80.0/100
Serious Mass Cho..
80.0/100
Ingredient Quality
Critical Mass Pr..
70.0/100
Serious Mass Cho..
70.0/100
Value for Money
Critical Mass Pr..
80.0/100
Serious Mass Cho..
80.0/100
Side Effects
Critical Mass Pr..
80.0/100
Serious Mass Cho..
70.0/100
Certifications
Critical Mass Pr..
30.0/100
Serious Mass Cho..
50.0/100

What are the key differences?

Critical Mass Chocolate is best for: Hard gainers seeking muscle growth, Beginners new to mass gainers
Optimum Serious Mass Choc Peanut Butter is best for: Hard gainers struggling to consume sufficient calories, Bodybuilders and strength athletes in muscle-building phases

Frequently Asked Questions

Which is better, Critical Mass Chocolate or Optimum Serious Mass Choc Peanut Butter?
Critical Mass Chocolate scores 70.0/100 overall while Optimum Serious Mass Choc Peanut Butter scores 70.0/100. Both score equally overall — the difference comes down to individual dimensions. Critical Mass Chocolate is best suited for Hard gainers seeking muscle growth and Beginners new to mass gainers. Optimum Serious Mass Choc Peanut Butter is better for Hard gainers struggling to consume sufficient calories and Bodybuilders and strength athletes in muscle-building phases.
Is Critical Mass Chocolate worth the price compared to Optimum Serious Mass Choc Peanut Butter?
Critical Mass Chocolate costs £67.50 while Optimum Serious Mass Choc Peanut Butter is £36.00. For value, Critical Mass Chocolate scores 80.0/100 vs Optimum Serious Mass Choc Peanut Butter's 80.0/100. Both offer similar value for money.
Which has fewer side effects?
Critical Mass Chocolate scores 80.0/100 for side effects (higher means fewer reported issues) while Optimum Serious Mass Choc Peanut Butter scores 70.0/100. Reviewers report fewer side effects with Critical Mass Chocolate. For certification and testing, Critical Mass Chocolate scores 30.0/100 vs Optimum Serious Mass Choc Peanut Butter's 50.0/100. Always consult a healthcare professional before starting any supplement.

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