Price History (90 days)
Quick Facts
- Form
- Powder
- Dose
- 5000mg BCAAs (4:1:1 ratio)
- Serving
- 5g (1 scoop)
- Servings
- 50
- Vegan
- Yes
- Made in
- UK
Myprotein BCAA 4:1:1 Powder
by Myprotein
BCAA powder with a higher leucine ratio of 4:1:1, reflecting research suggesting leucine is the primary driver of muscle protein synthesis. Available in multiple flavours, the 250g pouch provides approximately 50 servings. Myprotein is the UK's largest online sports nutrition brand, known for aggressive pricing and frequent sales. The flavoured powder format is popular for intra-workout sipping.
AI Review Summary
Myprotein's BCAA 4:1:1 offers a leucine-heavy ratio at a competitive UK price. The 5g per serving provides more total BCAAs than capsule alternatives, and the Informed Sport cert is valuable for tested athletes. However, the same criticism applies to all BCAA products — EAAs or whole protein may be more effective. Mixability issues and inconsistent flavours are commonly reported. Best purchased during Myprotein's frequent 40-50% off sales.
Pros
- +Higher leucine ratio may enhance MPS signalling
- +Informed Sport certified for drug-tested athletes
- +Very competitive UK pricing especially during sales
- +Vegan-friendly powder format
Cons
- -Mixability issues — tends to clump
- -Flavour quality is inconsistent across range
- -BCAA value questioned vs EAAs or whole protein
Best For
Watch Out
- !Buy during Myprotein sales for best value — RRP is inflated
- !EAA supplements may be more effective than BCAAs alone
Ingredients & Composition
Active Ingredients
- L-Leucine
- 3333mg
- L-Isoleucine
- 833mg
- L-Valine
- 833mg
Other Ingredients
Natural Flavouring, Citric Acid, Sucralose, Colour (Beetroot Red)
Clean Label Analysis
The flavoured format introduces sucralose and citric acid which some users prefer to avoid. The unflavoured version is available with fewer additives but most people find BCAAs extremely bitter without flavouring.
Quality & Testing
Third-Party Tested
This product has been independently tested by third-party laboratories for purity, potency, and safety.
Certifications
Additional Specifications
- Type
- Amino Acid
- Form
- Powder
- Dose
- 5000mg BCAAs (4:1:1 ratio)
- Serving Size
- 5g (1 scoop)
- Fillers Analysis
- The flavoured format introduces sucralose and citric acid which some users prefer to avoid. The unflavoured version is available with fewer additives but most people find BCAAs extremely bitter without flavouring.
- Allergens
- Free from: gluten, dairy, eggs, nuts
- Made In
- UK
How We Score Supplements
Our AI analyses reviews from Reddit, Amazon, YouTube, and specialist forums, then scores each product on a 1-10 scale across six evidence-based categories:
Effectiveness
How well the product delivers its claimed benefits, based on aggregated user experiences.
Ingredient Quality
Bioavailable forms, clean label, minimal fillers, no artificial junk. Higher = cleaner.
Value for Money
Price per serving relative to ingredient quality and effectiveness.
Side Effects Profile
Higher score = fewer side effects. 10 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.
Disclaimer: AIScored provides AI-generated 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.