Myprotein Impact Whey Protein Powder. Muscle Building Supplements for Everyday Workout with Essential Amino Acid and Glutamine. Vegetarian, Low Fat and Carb Content - Chocolate Peanut Butter, 1kg
by Myprotein
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Myprotein Impact Whey Protein is a budget-friendly whey concentrate delivering 21g of protein per 25g serving at just 103 calories, making it one of the UK's most popular everyday training powders. Best for Budget-conscious gym-goers seeking everyday protein and Beginners looking for a reliable, widely available whey powder.
According to the AIScored 0–100 scoring system, Myprotein Impact Whey Protein Powder. Muscle Building Supplements for Everyday Workout with Essential Amino Acid and Glutamine. Vegetarian, Low Fat and Carb Content - Chocolate Peanut Butter, 1kg by Myprotein scores 68.0/100, ranking #112 out of 174 products in Whey Protein (2026). Strongest category: Value For Money (86.0/100). Weakest: Certifications (30.0/100).
Is Myprotein Impact Whey Protein Po... worth buying?
“Myprotein Impact Whey earns its 68/100 score by cutting the fluff—103 calories and 21g of protein per serving without the gritty texture you'd normally get at this price point. For regular training on a budget, this chocolate peanut butter is exactly what it claims: proper protein that mixes well without premium brand costs.”
What Do Reviewers Say About Myprotein Impact Whey Protein Powder. Muscle Building Supplements for Everyday Workout with Essential Amino Acid and Glutamine. Vegetarian, Low Fat and Carb Content - Chocolate Peanut Butter, 1kg?
Sample excerpts from currently available source material used in this product analysis.
"They don’t offer returns even if unopened. You only get 18g protein per scoop, I got chocolate peanut butter and the flavour is disgusting has awful strong metallic flavour no matter how you prepare; shake, smoothie, oats etc. Inedible Wast..."
"Very pleased with this product; the usual myprotein self-sealing packaging provides ample storage. Taste is great with water and delicious with milk - highly recommend. Unlike a number of Myprotein's other products, mixes incredibly easily,..."
"With my normal shop for protein affected by delays due to COVID, I decided to try Myprotein out. It tastes fine, and mixes well but the texture is not as nice as PhD powders (basically like a thick delicious milkshake), and certainly not as..."
"Der Geschmack ist einigermaßen ok. Mir ist das Protein aber absolut zu süß. Bekomme es fast nicht runter und das bei nur 30gr auf ein Glas Milch. Werde ich nicht mehr kaufen"
"Good value if you keep in mind that it doesn't mix quite as well or go as milkshake-like as premium brands such as USN but chocolate flavours in all brands mix worse, must be the cocoa. However, it is also a larger bag at a full kilogram an..."
How does Myprotein Impact Whey Protein Powder.... score?
Detailed score breakdown and key findings from our analysis of 13 reviews across 1 source.
Pros
- +Excellent value for money — consistently praised as cheaper than comparable premium brands
- +Mixes easily and quickly in water or milk with minimal clumping
- +Low calorie, low fat, low carb profile (103 kcal, 1.9g fat, 1g carbs per serving)
- +Over 40 flavour options including stevia-sweetened variants
- +Solid 80%+ protein yield per serving typical of quality whey concentrate
Cons
- -Chocolate Peanut Butter peanut flavour is weak — multiple reviewers note it tastes predominantly of chocolate
- -Texture is thinner than milkshake-style competitors; not ideal for baking, oats or protein bars
- -Some users report digestive discomfort, bloating and flatulence (expected with whey concentrate)
- -Not third-party tested — unsuitable for athletes in tested sports
Best For
Watch Out
- !Peanut flavour intensity disappoints many buyers of this specific variant — consider vanilla or chocolate smooth instead
- !Whey concentrate may cause bloating or GI discomfort in lactose-sensitive individuals
- !No Informed Sport or NSF certification — avoid if subject to anti-doping testing
- !No-returns policy even on unopened bags flagged by at least one reviewer
What is Myprotein Impact Whey Protein Powder. Muscle Building Supplements for Everyday Workout with Essential Amino Acid and Glutamine. Vegetarian, Low Fat and Carb Content - Chocolate Peanut Butter, 1kg?
Myprotein Impact Whey Protein Powder. Muscle Building Supplements for Everyday Workout with Essential Amino Acid and Glutamine. Vegetarian, Low Fat and Carb Content - Chocolate Peanut Butter, 1kg is a whey protein product by Myprotein in powder form, scoring 68.0/100 on AIScored.
- • EVERYDAY PROTEIN - Premium whey packed with 21g of protein per serving, for the everyday protein you need from a quality source.
- • Can be used by both men and women, perfect for everyone, whatever your fitness goals VARIETY OF FLAVOURS - Get yours in over 40, indulgent, mouth-watering flavours, including some delicious favourites such as Chocolate, Vanilla, and Strawberry Cream.
- • If you prefer a more natural taste, we’ve got a range of stevia flavoured options too! EASY TO USE - It’s fast absorbing, so we recommend adding 1 large scoop (25g) to 150-250ml of water or milk 30-60 minutes post-workout — but it’s ideal any time for a convenient way to get the protein you need LOW IN SUGAR AND FAT - Vegetarian friendly with just 1.9g of fat, 1g of carbs, and at just 103 calories per serving, our Impact Whey Protein makes the perfect shake for everyone QUALITY ASSURANCE - There’s simply not another protein powder out there that delivers the same outstanding quality and value.
- • And that’s because at MyProtein, our products are created in our own state-of-the-art production facility.
- • Our popular Impact Whey Protein provides over 80% protein per serving, so you can be assured of its quality.
Is Myprotein Impact Whey Protein Powder. Muscle Building Supplements for Everyday Workout with Essential Amino Acid and Glutamine. Vegetarian, Low Fat and Carb Content - Chocolate Peanut Butter, 1kg 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
- Vegan
- No
Frequently Asked Questions
Is Myprotein Impact Whey Protein Powder. Muscle Building Supplements for Everyday Workout with Essential Amino Acid and Glutamine. Vegetarian, Low Fat and Carb Content - Chocolate Peanut Butter, 1kg worth buying in 2026? ▼
What is the best price for Myprotein Impact Whey Protein Powder. Muscle Building Supplements for Everyday Workout with Essential Amino Acid and Glutamine. Vegetarian, Low Fat and Carb Content - Chocolate Peanut Butter, 1kg in the UK? ▼
What are the pros and cons of Myprotein Impact Whey Protein Powder. Muscle Building Supplements for Everyday Workout with Essential Amino Acid and Glutamine. Vegetarian, Low Fat and Carb Content - Chocolate Peanut Butter, 1kg? ▼
Is Myprotein Impact Whey Protein Powder. Muscle Building Supplements for Everyday Workout with Essential Amino Acid and Glutamine. Vegetarian, Low Fat and Carb Content - Chocolate Peanut Butter, 1kg 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.
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