Serious Mass Cookies & Cream 5.4kg
by Optimum Nutrition
Serious Mass is a high-calorie weight gain powder designed for muscle building with 1,250 calories, 50g protein, and 3g creatine per serving. Best for Hard-gainers and individuals with high metabolic rates and Muscle-building athletes in bulking phases.
According to the AIScored 0–100 scoring system, Serious Mass Cookies & Cream 5.4kg by Optimum Nutrition scores 70.0/100, ranking #10 out of 23 products in Mass Gainers (2026). Strongest category: Effectiveness (80.0/100). Weakest: Certifications (30.0/100).
Is Serious Mass Cookies & Cream 5.4kg worth buying?
“Serious Mass from Optimum Nutrition packs 1,250 calories and 50g protein per serving, which explains why every single user has given it five stars for taste and mixability. The 3g of creatine monohydrate included in each scoop is a genuine bonus if you're looking to build both size and strength.”
What Do Reviewers Say About Serious Mass Cookies & Cream 5.4kg?
Sample excerpts from currently available source material used in this product analysis.
"Worth it. Great taste, reaping the benefits quickly too. Great for bulking and other needs!"
How does Serious Mass Cookies & Cream 5.4kg score?
Detailed score breakdown and key findings from our analysis of 4 reviews across 1 source.
Pros
- +Excellent user satisfaction (100% 5-star reviews) with consistent praise for taste and smoothness
- +Comprehensive calorie and protein delivery (1,250 kcal + 50g protein) for serious mass gain goals
- +Added creatine monohydrate (3g per serving) supports performance and strength gains
- +Broad micronutrient fortification including vitamins B-complex, C, E, and minerals for recovery
- +Trusted brand (Optimum Nutrition) with established market reputation
Cons
- -Very high sugar content (12g per serving) and simple carbohydrates (maltodextrin) may cause energy crashes
- -Not third-party tested; no NSF Certified for Sport or similar verification
- -Multiple allergens (milk, soy, wheat, eggs) limit accessibility; high sodium (1.48g per serving)
- -High saturated fat per serving (4g) may be a concern for some cardiovascular profiles
Best For
Watch Out
- !Not suitable for those with milk, soy, wheat, or egg allergies/sensitivities
- !High sodium intake per serving (1.48g) — monitor if on sodium-restricted diet
- !Simple carbohydrate profile (maltodextrin, sugars) may cause blood sugar spikes; not ideal for diabetics
- !Contains creatine monohydrate — ensure adequate hydration and monitor kidney function if used long-term at high doses
What is Serious Mass Cookies & Cream 5.4kg?
Serious Mass Cookies & Cream 5.4kg is a mass gainers product by Optimum Nutrition in powder form, scoring 70.0/100 on AIScored.
- • SUPPORTS MUSCLE BUILDING & WEIGHT GAIN1,250 CALORIES* – HELPS BOOST CALORIE INTAKE50 g▲ SOURCE OF PROTEIN – HELPS BUILD AND MAINTAIN MUSCLE▪Serious weight gain requires serious calories.
- • However, those who need the extra calories most often have the toughest time consuming enough of them.
- • For many aspiring to be bigger, a highly active metabolism, weaker appetite and on-the-run lifestyle can make it a real challenge to consume enough calories through whole foods alone.
- • Serious Mass is the ultimate in weight gain formulas.With 1,250 calories per serving to boost daily calorie intake, 50g high protein to support muscle growth and repair, over 250g carbohydrates helping support muscle recovery , and now with 3g added Creatine to support performance per serving, you’ve got nothing to lose and lots to gain.
- • It is time to stop thinking small and get serious – SERIOUS MASS®.
What's Inside Serious Mass Cookies & Cream 5.4kg?
Serious Mass Cookies & Cream 5.4kg contains 36 active ingredients: Per, Fat, of which saturates, Carbohydrates and more.
Active Ingredients
- Per
- 100g / Per 336g Serving: Energy 1575kJ / 5292kJ / 376kcal / 1265kcal
- Fat
- 2.1g / 6.9g
- of which saturates
- 1.2g / 4.0g
- Carbohydrates
- 74g / 250g
- of which sugars
- 3.6g / 12g
- Protein
- 15g / 50g
- Salt
- 0.44g / 1.48g
- Vitamin E
- 2.7 mg / 9.0 mg
- Vitamin C
- 19 mg / 63 mg
- Thiamin
- 0.27 mg / 0.90 mg
- Riboflavin
- 0.34 mg / 1.1 mg
- Niacin
- 4.0 mg / 13 mg
- Pantothenic Acid
- 1.3 mg / 4.5 mg
- Calcium
- 227 mg / 764 mg
- Phosphorus
- 155 mg / 522 mg
- Magnesium
- 83.8 mg / 282 mg
- Iron
- 4.2 mg / 14 mg
- Zinc
- 4.2 mg / 14 mg
- Copper
- 0.30 mg / 1.0 mg
- Manganese
- 83.8 mg / 282 mg
- Fluoride
- 0.87 mg / 2.9 mg
- Creatine
- 0.9 g / 3.0 g Macro Nutrient table: Energy Kcal per 100g 376Kcal
- Energy kJ per
- 100g 1575kJ
- Fats per
- 100g 2.1g
- Of which Saturates per
- 100g 1.2g
- Carbohydrates per
- 100g 74g
- Sugar per
- 100g 3.6g
- Protein per
- 100g 15g
- Salt per
- 100g 0.44g
- Fats per serving
- 6.9g
- Of which Saturates per serving
- 4g
- Carbohydrates per serving
- 250g
- Sugar per serving
- 12g
- Protein per serving
- 50g
- Salt per serving
- 1.48g
- Serving size
- 336g
Other Ingredients
Corn, Maltodextrin, WHEY Protein Concentrate [MILK] (Emilsifier: Lecithin [SOY]), Flavourings, Cookies Crumb (1.5%) (WHEAT Flour [GLUTEN], Sugar, Vegetable Fats: Palm, Rapeseed Fat-Reduced Cocoa Powder, Salt), Creatine Monohydrate, MILK Mineral Complex, Salt, Minerals (Magnesium, Iron, Zinc, Manganese, Fluoride, Selenium, Iodine, Copper, Molybdenum, Chromium), Vitamins (C, E, B3, A, B5, B7, B12, B9, D, B6, B1, K, B2), Stabilisers (Cellulose Gum, Guar Gum, Carrageenan), Sweetener (
Is Serious Mass Cookies & Cream 5.4kg 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 Cookies & Cream 5.4kg Compare?
See how this product stacks up against the top-rated mass gainers in our database.
| Product | Score | Price |
|---|---|---|
| Serious Mass Cookies & Cream 5.4kg (this) | 70.0 | £58.00 |
| 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 Cookies & Cream 5.4kg worth buying in 2026? ▼
What is the best price for Serious Mass Cookies & Cream 5.4kg in the UK? ▼
What are the pros and cons of Serious Mass Cookies & Cream 5.4kg? ▼
Is Serious Mass Cookies & Cream 5.4kg third-party tested? ▼
How does Serious Mass Cookies & Cream 5.4kg 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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