Amino acids

Compare BCAA & EAA Prices UK

Every bag ranked by cost per 25g of real protein. Live prices from 98+ UK retailers. Updated weekly.

139 products tracked98+ retailersWeekly updates
Cheapest right now·top 1 of 139
#1Optimum Nutrition Gold Standard BCAA Train + Sustain Powder - Elite Series - 266g (28 Servings)
Optimum Nutrition
Gold Standard BCAA Train + Sustain Powder - Elite Series - 266g (28 Servings)
£1.25/ serving
Amino acids

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How we compare amino acids

Amino acid supplements split into two camps. BCAAs (branched-chain: leucine, isoleucine, valine) were the standard for years; EAAs (essential aminos: all nine) have overtaken them in the research because complete amino profiles drive muscle protein synthesis more effectively than BCAAs alone.

Both work as standalone serving categories only when dietary protein is low or training is fasted. If you hit your daily protein target, dedicated amino acid supplements add little on top. If you do use them, leucine content is the single most important number — around 2.5 to 3g per serving triggers maximal MPS.

This page ranks every UK amino acid product by cost per serving. BCAAs and EAAs sit in separate shelves so you can compare like for like. Ratio (e.g. 2:1:1 leucine to isoleucine to valine) is standard for BCAAs; for EAAs the total amino profile matters more than the ratio.

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Tracking 98 UK retailers
Optimum NutritionApplied NutritionThe Protein WorksGrenadeUSNReflex NutritionBulkMyProteinFormHuelHolland & BarrettAmazonBootsTescoSainsbury’sMyveganMuscle FoodProtein DynamixPhDWarriorOptimum NutritionApplied NutritionThe Protein WorksGrenadeUSNReflex NutritionBulkMyProteinFormHuelHolland & BarrettAmazonBootsTescoSainsbury’sMyveganMuscle FoodProtein DynamixPhDWarrior
Methodology

How we rank every bag.

Independent, transparent, and updated weekly. Here's what goes into each score.

01
Cost normalised to £/25g
Every bag divided by its true protein weight, so you see the real cost of a scoop across any size or brand.
02
Protein quality, not just %
Protein %, leucine and digestibility feed the Performance score. A 90% isolate and a 90% vegan blend are not the same.
03
Clean-label audit
Ingredient count, artificial sweeteners, added sugars, third-party certifications. 0 to 100 score.
04
Social and review signals
Weekly purchase volume and weighted review scores surface what people actually re-buy, not just what ranks on search.

Questions, answered.

EAA in most cases. EAAs contain all nine essential amino acids including the three BCAAs, so they cover the same ground plus the rest of the amino profile needed for MPS. BCAAs are cheaper but less complete; only pick BCAAs if price-per-serving matters more than peak effectiveness.
139 results