Serious Mass Vanilla 2.73kg
by Optimum Nutrition
Optimum Nutrition Serious Mass is a high-calorie weight gain formula delivering 1,260 kcal and 50g protein per serving, designed for muscle building in those struggling to consume enough calories. Best for Hardgainers and ectomorphs struggling to eat enough calories and Bodybuilders and strength athletes in dedicated bulking phases.
According to the AIScored 0–100 scoring system, Serious Mass Vanilla 2.73kg by Optimum Nutrition scores 70.0/100, ranking #13 out of 23 products in Mass Gainers (2026). Strongest category: Effectiveness (70.0/100). Weakest: Certifications (40.0/100).
Is Serious Mass Vanilla 2.73kg worth buying?
“Serious Mass from Optimum Nutrition gives you 1,260 calories and 50g protein per serving, plus 3g creatine, which is genuinely useful if you're serious about a bulk. With a score of 70/100, it's a reliable workhorse for muscle building, though the thick texture and high price mean it's not for everyone.”
What Do Reviewers Say About Serious Mass Vanilla 2.73kg?
Sample excerpts from currently available source material used in this product analysis.
"Bestes Pulver von allen anderen Marken! Das ist das einzigste bei dem der Körper wirklich alles aufnimmt und für Masse ist das perfekt!"
How does Serious Mass Vanilla 2.73kg score?
Detailed score breakdown and key findings from our analysis of 6 reviews across 2 sources.
Pros
- +Exceptional calorie density (1,260 kcal per serving) for serious bulking phases
- +High protein content (50g per serving) supports muscle protein synthesis during surplus
- +Includes 3g creatine monohydrate per serving (evidence-backed for strength and muscle gains)
- +Comprehensive micronutrient profile (25+ vitamins and minerals) reduces need for separate supplementation
- +All available reviews (4/4) rate it 5 stars; reviewers note good taste and palatability
Cons
- -Very high sugar per serving (12g) and extremely high carbohydrate content (250g) may cause digestive bloating or blood sugar spikes in sensitive individuals
- -Salt content is quite high (1.89g per serving, ~82% of daily value) which could contribute to water retention
- -No third-party testing certification (NSF, Informed Choice, etc.) limits independent verification of label claims
- -Review pool is tiny (n=4) with minimal detail on actual weight gain, muscle gain, or long-term tolerance; some reviews appear tangential (e.g., comment on staff rather than product)
Best For
Watch Out
- !Extremely high carbohydrate load (250g per serving) may cause bloating, GI discomfort, or blood sugar fluctuations; start with smaller doses if sensitive
- !High sodium content (1.89g) could cause water retention or be problematic for those with hypertension or sodium sensitivity
- !Minimal review data (n=4) with no substantive feedback on actual results, tolerance, or potential side effects over time
- !Contains milk, egg, and possible gluten/peanut traces; unsuitable for dairy-free, vegan, or severe allergy diets
- !No third-party testing means reliance on manufacturer's label accuracy and quality control
What is Serious Mass Vanilla 2.73kg?
Serious Mass Vanilla 2.73kg is a mass gainers product by Optimum Nutrition in powder form, scoring 70.0/100 on AIScored.
- • Serious weight gain requires serious calories.
- • Optimum Nutrition Serious Mass is the ultimate weight gain formula.
- • For muscle building and weight gain More than 1260 kcal per serving to help boost your calorie intake 50g protein per serving 25 vitamins & supplements Those who need the extra calories most often have the toughest time consuming enough of them.
- • For many aspiring to be bigger, Serious Mass is the ultimate in weight gain formulas.
- • With over 1,250 calories per serving to boost daily calorie intake, 50g high protein to support muscle growth and repair, over 250g carbohydrates, and now with 3g of added creatine per serving to support performance, you’ve got nothing to lose and lots to gain.
- • It is time to stop thinking small and get serious – SERIOUS MASS.
- • Use anytime, it is quick, convenient and easy to prepare.
- • Serious Mass is ideal between meals, after weight training as part of your recovery routine and before bed.
- • Just mix two scoops of Serious Mass (334g) with 710ml of water to create a tasty, calorie-packed shake.
What's Inside Serious Mass Vanilla 2.73kg?
Serious Mass Vanilla 2.73kg contains 37 active ingredients: Per, Fat, of which saturates, Carbohydrates and more.
Active Ingredients
- Per
- 100g / 335g portion: Energy 1572kJ / 5267kJ / 376kcal / 1259kcal
- Fat
- 1.8g / 6.2g
- of which saturates
- 1.0g / 3.4g
- Carbohydrates
- 75g / 250g
- of which sugars
- 3.6g / 12g
- Protein
- 15g / 50g
- Salt
- 0.57g / 1.89g
- Vitamin E
- 2.7 mg / 9.0 mg
- Viamin C
- 19 mg / 63 mg
- Thiamin
- 0.27 mg / 0.90 mg
- Riboflavin
- 0.34mg / 1.1mg
- Niacin
- 4.0 mg / 13 mg
- Pantothenic Acid
- 1.3 mg / 4.5 mg
- Calcium
- 227 mg / 760 mg
- Phosphorus
- 158 mg / 530 mg
- Magnesium
- 0.60 mg / 2.0 mg
- Iron
- 4.2mg / 14mg
- Zinc
- 3.0mg / 10mg
- Copper
- 0.30mg / 1.0mg
- Manganese
- 0.60mg / 2.0mg
- Fluoride
- 0.87 mg / 2.9 mg
- Selenium
- 16µg / 55µg
- Creatine
- 0.9g / 3.0g Macro Nutrient table: Energy Kcal per 100g 376Kcal
- Energy kJ per
- 100g 1572kJ
- Fats per
- 100g 1.8g
- Of which Saturates per
- 100g 1g
- Carbohydrates per
- 100g 75g
- Sugar per
- 100g 3.6g
- Protein per
- 100g 15g
- Salt per
- 100g 0.57g
- Fats per serving
- 6.2g
- Of which Saturates per serving
- 3.4g
- Carbohydrates per serving
- 250g
- Sugar per serving
- 12g
- Protein per serving
- 50g
- Salt per serving
- 1.89g
- Serving size
- 335g
Other Ingredients
Maltodextrin, Whey Protein Concentrate (Milk), Calcium Caseinate (Milk), Flavourings, Creatine Monohydrate, Milk Mineral Complex, Medium Chain Triglycerides (Milk), Egg Albumen, Dipotassium Phosphate, Sodium Chloride, Vitamin and Mineral Blend (Sodium L-Ascorbate, Ferric Pyrophosphate, D-Alpha-Tocopheryl Acetate, Nicotinamide, Zinc Oxide, Retinyl Acetate, Calcium D-Pantothenate, Sodium Fluoride, Manganese Sulphate, Potassium Iodate, Cyanocobalamin, D-Biotin, Chromium (II
Is Serious Mass Vanilla 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 Vanilla 2.73kg Compare?
See how this product stacks up against the top-rated mass gainers in our database.
| Product | Score | Price |
|---|---|---|
| Serious Mass Vanilla 2.73kg (this) | 70.0 | £39.17 |
| 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 Vanilla 2.73kg worth buying in 2026? ▼
What is the best price for Serious Mass Vanilla 2.73kg in the UK? ▼
What are the pros and cons of Serious Mass Vanilla 2.73kg? ▼
Is Serious Mass Vanilla 2.73kg third-party tested? ▼
How does Serious Mass Vanilla 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.
What Are Other Top Mass Gainers?
Other top-rated mass gainers you might want to compare.
Critical Mass Professional Lean Mass Gainer Banana 2.4kg (16 Servings)
Applied Nutrition
Critical Mass Professional Lean Mass Gainer Chocolate 2.4Kg (40 Servings)
Applied Nutrition
Critical Mass Professional Lean Mass Gainer Banana 6kg (40 Servings)
Applied Nutrition
Bulk Complete Mass Gainer
Bulk
Feedback & Suggestions
Spotted an issue? Wrong price, incorrect data, or something else off? Let us know and we'll fix it.
Missing a product you'd like us to review? Tell us the product name and we'll consider adding it.