SERIOUS Gainz 2kg - Whey Protein Powder - Weight Gain, Mass Gainer - 30g Protein Powders - The Bulk Protein Company (Chocolate, 2kg)
by Warrior
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SERIOUS Gainz by The Bulk Protein Company is a budget-friendly mass gainer delivering 30g protein and 468 calories per 125g serving, making it one of the more calorie-dense options at a competitive price point. Best for Hard gainers and ectomorphs struggling to consume enough daily calories and Beginners to resistance training seeking a straightforward mass-gain shake.
According to the AIScored 0–100 scoring system, SERIOUS Gainz 2kg - Whey Protein Powder - Weight Gain, Mass Gainer - 30g Protein Powders - The Bulk Protein Company (Chocolate, 2kg) by Warrior scores 67.0/100, ranking #127 out of 174 products in Whey Protein (2026). Strongest category: Value For Money (80.0/100). Weakest: Certifications (30.0/100).
Is SERIOUS Gainz 2kg - Whey Protein... worth buying?
“SERIOUS Gainz gives you 468 calories and 30g protein per serving at a 67/100 score — proper fuel for hard gainers without the premium price tag. The chocolate and banana flavours taste genuinely natural rather than chemical, and it mixes well, so you're really getting what you pay for here.”
What Do Reviewers Say About SERIOUS Gainz 2kg - Whey Protein Powder - Weight Gain, Mass Gainer - 30g Protein Powders - The Bulk Protein Company (Chocolate, 2kg)?
Sample excerpts from currently available source material used in this product analysis.
"Great taste, piced well, not gritty. I felt fuller on it. Did helpnto put on weight. Good product"
"Mixes well with water and milk no clumping and no powdery gritty taste good as a meal on the go or to stop snacking between meals"
"A great product with results you'll be pleased with. Only issue is I found that I needed more water than was specified."
"Probably the first brand of protein products I’ve tried where the powdered shakes actually taste good. Was expecting that artificial banana flavour but was very pleasantly surprised when I tried it and it tasted & smelled like a real banana..."
"The macros on this seemed to me like one of the best options for a weight gaining shake. For only a 125g serving (compared to +300g servings of other shakes), you could get around 450 calories and 30g of protein. After making a milkshake wi..."
How does SERIOUS Gainz 2kg - Whey Protein Powd... score?
Detailed score breakdown and key findings from our analysis of 10 reviews across 1 source.
Pros
- +Highly praised flavour range — banana and chocolate described as natural-tasting rather than artificial
- +Mixes reasonably well with water or milk with minimal clumping for most users
- +Strong calorie density (468 kcal per serving) makes it practical for hard gainers
- +Good value per serving compared to branded mass gainers
- +Oat-derived carbohydrates provide a moderate glycaemic load, supporting sustained energy
Cons
- -At least one reviewer experienced a dry, powdery consistency that caused choking — possibly linked to insufficient liquid or individual sensitivity
- -Packaging quality is poor — zipper seal on the bag reported as non-functional, bag oversized for 2kg
- -Not third-party tested, so protein content and label accuracy cannot be independently verified
- -Contains milk, soy, and oat allergens — unsuitable for several common dietary restrictions
Best For
Watch Out
- !Contains milk, soy, and oat — unsuitable for lactose intolerant, soy-sensitive, or coeliac users
- !No third-party certification — protein content and purity unverified
- !High carbohydrate load (81g per serving) may not suit those on lower-carb protocols or with blood sugar concerns
- !Zipper bag packaging fails to reseal — transfer to an airtight container recommended
What is SERIOUS Gainz 2kg - Whey Protein Powder - Weight Gain, Mass Gainer - 30g Protein Powders - The Bulk Protein Company (Chocolate, 2kg)?
SERIOUS Gainz 2kg - Whey Protein Powder - Weight Gain, Mass Gainer - 30g Protein Powders - The Bulk Protein Company (Chocolate, 2kg) is a whey protein product by Warrior in powder form, scoring 67.0/100 on AIScored.
- • 30g PROTEIN PER SERVING TO HELP BUILD MUSCLE - Protein Isolate powder that contains 30 grams of high quality Protein per serving.
- • A convenient and easy way to help you meet your daily protein needs.
- • Use after training to quickly heal micro-tears in muscle tissues, which speeds up recovery, reduces muscle soreness and leads to stronger and bigger muscles over time.
- • PUT ON SIZE AND GAIN MASS - With 468 lean calories per serving, Serious Gainz protein powder is ideal when BULKING.
- • Use as part of a balanced diet to help add body mass and increase weight gain.
- • Contains 81g of carbohydrates which will help your body absorb the protein within, turning it into muscle mass to help towards improving your overall body composition.
- • PROTEIN SHAKE THAT TASTES GREAT - Add 3 scoops of powder to 400-500ml of water or milk and mix well to create a great tasting Protein Shake! Can also be enjoyed in smoothies, with oats or when added to a pancake mix.
- • Protein powders don't have to be boring, so we made 10 different flavours for you to choose from.
- • HIGH QUALITY WHEY PROTEIN - Whey digests quickly and is rich in branched-chain amino acids (BCAAs).
- • One of these BCAAs, Leucine, plays a major role in promoting muscle growth and recovery after resistance and endurance exercise.
- • When amino acids are digested and absorbed into your bloodstream, they become available for muscle protein synthesis, which is the creation of new muscle.
- • EXCELLENT VALUE 5kg TUB WITH 40 SERVINGS - With up to a month's supply of high quality protein powder, we offer great value for your money compared with other brands.
- • We recommend one serving per day to consistently meet your daily protein goal.
- • Consume immediately post-training on workout days and between breakfast and lunch on non-workout days.
- • Comes with scooper for measurements.
Is SERIOUS Gainz 2kg - Whey Protein Powder - Weight Gain, Mass Gainer - 30g Protein Powders - The Bulk Protein Company (Chocolate, 2kg) 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.
Price History (90 days)
Quick Facts
- Form
- Powder
- Serving
- 3 scoops
- Vegan
- No
Frequently Asked Questions
Is SERIOUS Gainz 2kg - Whey Protein Powder - Weight Gain, Mass Gainer - 30g Protein Powders - The Bulk Protein Company (Chocolate, 2kg) worth buying in 2026? ▼
What is the best price for SERIOUS Gainz 2kg - Whey Protein Powder - Weight Gain, Mass Gainer - 30g Protein Powders - The Bulk Protein Company (Chocolate, 2kg) in the UK? ▼
What are the pros and cons of SERIOUS Gainz 2kg - Whey Protein Powder - Weight Gain, Mass Gainer - 30g Protein Powders - The Bulk Protein Company (Chocolate, 2kg)? ▼
Is SERIOUS Gainz 2kg - Whey Protein Powder - Weight Gain, Mass Gainer - 30g Protein Powders - The Bulk Protein Company (Chocolate, 2kg) third-party tested? ▼
What the Data Says About Whey Protein
What makes a clean whey protein? Ingredient quality scores across 169 UK products
Fewer ingredients = cleaner protein. We scored 169 whey proteins on ingredient quality (IQ) and the gap between top and bottom is massive: 65 points, from 95/100 down to 30/100.
The top 7 products by IQ all share one trait — minimal ingredient lists:
- PINK SUN Organic Whey Concentrate — IQ 95, overall 85
- Isopure Unflavoured Whey Isolate — IQ 91, overall 76
- LEGION Whey+ Isolate — IQ 91, overall 80
- PINK SUN Whey Isolate Unflavoured — IQ 91, overall 81
- Purition 100% Whey Isolate 93% Protein — IQ 91, overall 80
- Dymatize ISO100 — IQ 90, overall 84
- Naked Whey (1 ingredient) — IQ 90, overall 74
The bottom tells the opposite story. Products like BodyFuel Clear Protein (IQ 30), Amfit Nutrition (IQ 38), and Protein Dynamix 3XP (IQ 38) use multi-source protein blends padded with artificial sweeteners, thickeners, and colourings.
The average across all 169 products is 70.7/100. If your whey protein has more than 5-6 ingredients, check what's filling up that list. A clean whey needs protein, maybe a natural flavour, and not much else.
Can cheap whey protein cause bloating? What to check on the label
Cheap whey often causes bloating because of what's added to the protein, not the protein itself. We scored 169 whey proteins and the worst-scoring products share the same filler-heavy ingredient profiles.
Three categories of additives show up repeatedly in low-IQ products (scored 30-42):
- Thickeners — xanthan gum, carrageenan, cellulose gum. These bulk up texture but can cause gas and bloating in sensitive stomachs.
- Artificial sweeteners — sucralose, acesulfame-K, aspartame. Linked to gut microbiome disruption in some studies. Budget brands use these heavily.
- Anti-caking agents and emulsifiers — added to improve mixability, but another source of digestive irritation.
Products like BodyFuel Clear Protein (IQ 30), Amfit Nutrition (IQ 38), and SCI-MX Ultra Muscle (IQ 42) stack several of these additives together.
Compare that to the top scorers: PINK SUN Organic Whey (IQ 95) and Naked Whey (IQ 90) use 1-3 ingredients total. No thickeners, no artificial sweeteners, no fillers. Users report far less digestive trouble with these minimal formulas.
Label check shortcut: flip the tub over. If the ingredient list has more than 6 items, or you spot carrageenan, sucralose, or acesulfame-K, that's your likely bloating culprit. A whey isolate with a short list costs a bit more but your gut will thank you.
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 Whey Protein?
Other top-rated whey protein you might want to compare.
100% Whey Protein Isolate, 93% Protein, Triple-Filtered, Unsweetened, Unflavoured, Soy Free, Low Fat, 23g Protein per Serving, 20 Servings - 500g
Purition
50g High Protein Shake Chocolate 500ml
Optimum Nutrition
1kg unflavoured Protein Powder - unflavoured whey Protein Powder Perfect for a high Protein Shake or Snack - whey Nutrition for Building Muscle - 38g of Protein per Serving
Millidose
3XP Whey Protein Powder - Whey, Pea & Hydrolysed Wheat Blend for Lean Muscle Growth - Banana Flavour - 22g Protein • 127kcal Per Serving - 1Kg
Protein Dynamix
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