Serious Mass Chocolate Peanut Butter 2.73kg
by Optimum Nutrition
Compare Prices
Serious Mass is a high-calorie weight gain formula by Optimum Nutrition delivering 1,263 kcal and 50g protein per serving. Best for Hard gainers struggling to consume sufficient calories and Bodybuilders and strength athletes in muscle-building phases.
According to the AIScored 0–100 scoring system, Serious Mass Chocolate Peanut Butter 2.73kg by Optimum Nutrition scores 70.0/100, ranking #8 out of 23 products in Mass Gainers (2026). Strongest category: Effectiveness (80.0/100). Weakest: Certifications (50.0/100).
Is Serious Mass Chocolate Peanut Bu... worth buying?
“Optimum Nutrition's Serious Mass packs 1,263 calories and 50g of protein per serving, making it genuinely useful if you're struggling to consume enough calories for muscle gain. The chocolate peanut butter flavour is pleasant enough to drink regularly, and the added creatine monohydrate gives you an extra edge for strength training.”
What Do Reviewers Say?
No directly attributable source excerpts are available for this product yet. The summary above is based on the currently stored dataset and will be expanded as new sources are ingested.
How does Serious Mass Chocolate Peanut Butter 2.73kg score?
Detailed score breakdown and key findings from our analysis of 4 reviews across 1 source.
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
- +Consistently smooth texture and taste (noted in reviews)
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
Watch Out
- !High sugar load (26g/serving) — unsuitable for diabetics or those minimizing refined carbs
- !Multiple allergens present — verify tolerance before regular use
- !Large serving volume may cause digestive discomfort in sensitive individuals
- !Not third-party tested — verification of creatine dose and ingredient purity relies on brand reputation
What is Serious Mass Chocolate Peanut Butter 2.73kg?
Serious Mass Chocolate Peanut Butter 2.73kg is a mass gainers product by Optimum Nutrition in powder form, scoring 70.0/100 on AIScored.
- • Optimum Nutrition Serious Mass is a high-calorie weight gain formula designed for those who struggle to get enough calories through food alone.
- • Each serving provides over 1,250 calories to boost your daily intake, 50g of protein to support muscle growth and repair, more than 250g of carbohydrates, 3g of creatine to support performance, and 25 vitamins and minerals.
- • Ideal between meals, after weight training as part of your recovery routine, or before bed.
- • To prepare, mix two scoops (330g) with 710ml of water for a calorie-packed shake.
What's Inside Serious Mass Chocolate Peanut Butter 2.73kg?
Serious Mass Chocolate Peanut Butter 2.73kg contains 45 active ingredients: Per, Fat, of which saturates, Carbohydrates and more.
Active Ingredients
- Per
- 100g / Per 2 scoops 334g: Energy 1582 kJ / 378 kcal / 5283 kJ /1263 kcal
- Fat
- 1,7 g / 5
- of which saturates
- 0,7 g / 2
- Carbohydrates
- 75 g / 251 g
- of which sugars
- 7,7 g / 26 g
- Protein
- 15 g / 50 g
- Salt
- 0,47 g / 1
- Fibre
- 1,0 g / 3
- Vitamin A
- 192 µg (24%)* / 640 µg (80%)*
- Vitamin D
- 1,2 µg (24%)* / 4
- Vitamin E
- 2,7 mg (22%)* / 9
- Vitamin C
- 19 mg (24%)* / 64 mg (80%)*
- Thiamin
- 0,27 mg (24%)* / 0
- Riboflavin
- 0,34 mg (25%)* / 1
- Niacin
- 3,9 mg (24%)* / 13 mg (81%)*
- Folic Acid
- 45,1 µg (23%)* / 151 µg (75%)*
- Biotin
- 11 µg (22%)* / 37 µg (75%)*
- Pantothenic Acid
- 1,4 mg (23%)* / 4
- Calcium
- 179 mg (22%)*/ 600 mg (75%)*
- Phosphorus
- 159 mg (23%)* / 532 mg (76%)*
- Magnesium
- 85,8 mg (23%)* / 287 mg (76%)*
- Iron
- 5,4 mg (39%)* / 18 mg (129%)*
- Zinc
- 3,2 mg (32%)* / 11 mg (106%)*
- Copper
- 0,41 mg (41%)* / 1
- Manganese
- 0,60 mg (30%)* / 2
- Selenium
- 17 µg (30%)* / 46 µg (101%)*
- Chromium
- 14 µg (34%)* / 46 µg (114%)*
- Iodine
- 44,9 µg (30%)*/ 150 µg (100%)*
- Creatine
- 0,9 g / 3
- Fluoride
- 1,0 mg (30%)* / 3
- Energy Kcal per
- 100g 378Kcal
- Energy kJ per
- 100g 1582kJ
- Fats per
- 100g 1.7g
- Of which Saturates per
- 100g 0.7g
- Carbohydrates per
- 100g 75g
- Sugar per
- 100g 7.7g
- Protein per
- 100g 15g
- Salt per
- 100g 0.47g
- Fats per serving
- 5.5g
- Of which Saturates per serving
- 2.4g
- Carbohydrates per serving
- 251g
- Sugar per serving
- 26g
- Protein per serving
- 50g
- Salt per serving
- 1.56g
- Serving size
- 334g
Other Ingredients
Maltodextrin, Whey Protein Concentrate (milk), Calcium Caseinate (milk) (Emulsifier: Soy Lecithin), Fat-Reduced Cocoa Powder (2.3%), Flavouring, Minerals (Sodium Chloride, Dipotassium Phosphate, Ferric Pyrophosphate, Zinc Oxide, Cupric Gluconate, Manganese Sulphate, Chromium III Chloride Hexahydrate, Potassium Iodide), EGG Albumen, Medium Chain Triglycerides, Creatine Monohydrate, Choline Bitartrate, L-Glutamine, Glutamine Peptides [Wheat], Whey Powder (milk), Inositol, Vitamin Bl
Is Serious Mass Chocolate Peanut Butter 2.73kg 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 Serious Mass Chocolate Peanut Butter 2.73kg Compare?
See how this product stacks up against the top-rated mass gainers in our database.
| Product | Score | Price |
|---|---|---|
| Serious Mass Chocolate Peanut Bu... (this) | 70.0 | £40.00 |
| Critical Mass Professional Lean ... | 80.0 | £40.00 |
Price History (90 days)
Quick Facts
- Form
- powder
- Serving
- 1 serving
- Vegan
- No
Frequently Asked Questions
Is Serious Mass Chocolate Peanut Butter 2.73kg worth buying in 2026? ▼
What is the best price for Serious Mass Chocolate Peanut Butter 2.73kg in the UK? ▼
What are the pros and cons of Serious Mass Chocolate Peanut Butter 2.73kg? ▼
Is Serious Mass Chocolate Peanut Butter 2.73kg third-party tested? ▼
How does Serious Mass Chocolate Peanut Butter 2.73kg 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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