MyProtein BCAA Powder Review — Is It Worth It?

BCAAs are one of the most debated supplements in sports nutrition — research increasingly suggests they offer minimal benefit for people already consuming adequate dietary protein. MyProtein's BCAA Powder is a decent product in a category that may not justify much spending at all.

What Is It?

MyProtein BCAA Powder is a 2:1:1 ratio branched-chain amino acid supplement providing leucine, isoleucine, and valine. It's positioned as a workout support supplement to reduce muscle breakdown during exercise, though the evidence for this in protein-replete individuals is contested.

Ingredients & Nutrition

Per 5g serving: 2.5g leucine, 1.25g isoleucine, 1.25g valine. The 2:1:1 ratio is the most research-referenced BCAA ratio. Each 500g bag provides 100 servings at the standard dose.

The formula is available flavoured (with natural and artificial flavourings, sucralose) or unflavoured. No fillers, no artificial colours. The amino acids are derived from fermentation (vegan-suitable) or hydrolysis depending on the variant.

Note that this product provides only three of the nine essential amino acids. If complete essential amino acid coverage is the goal, Bulk EAA or Xtend's full formula is a more complete choice.

Taste & Mixability

Flavoured variants (Fruit Punch, Lemon Tea) are pleasant and mix well in 300–400ml of water. Unflavoured BCAAs have a notably bitter taste that most people find unpleasant neat — mix into a protein shake or dilute with cordial. Mixability in a shaker is excellent.

Effectiveness

The honest assessment: if you're consuming 1.6–2g of protein per kg of bodyweight daily, additional BCAAs are unlikely to meaningfully improve your results. The leucine threshold for muscle protein synthesis (approximately 2–3g) is routinely met through food and protein powders.

BCAAs may provide value in specific scenarios: fasted training where muscle catabolism risk is higher, extended training sessions over 90 minutes, or for individuals with lower dietary protein intake. Outside these scenarios, total protein intake is the primary driver.

Value for Money

At £16.99 for 500g (100 servings), you're paying approximately £0.17 per serving. That's affordable, which matters in a supplement category where the cost-benefit ratio is uncertain. If you're going to take BCAAs, paying this little for them is sensible.

Verdict

MyProtein BCAA Powder is a fine product in a category that most gym-goers don't need. If your total protein intake is solid — 160–200g daily for a typical gym-goer — additional BCAAs are likely redundant. If you train fasted, run long, or struggle to hit protein targets, they may help. At this price, the risk of unnecessary spending is low.

Rating: 6/10