CHEAPEST
Size
500g
BCAA
2:1:1
-
100
BCAAs & EAAs
Compare BCAA & EAA Prices UK
Compare BCAAs and EAAs by serving cost and leucine.
Quick filters
Size
390g
BCAA
2:1:1
-
30
Size
270g
BCAA
2:1:1
-
30
Size
360g
EAA
-
-
30
Size
360g
BCAA
8:1:1
-
30
Size
1kg
EAA
-
-
66
Size
345g
EAA
-
-
30
Size
390g
EAA
2:1:1
-
30
Size
300g
EAA
-
3.3g
30
Size
266g
BCAA
-
-
28
Size
423g
BCAA
2:1:1
-
30
Size
450g - 1.4kg · 2 sizes
BCAA
-
-
32
Size
200g - 400g · 2 sizes
BCAA
-
-
2
Size
360g
BCAA
2:1:1
-
2
Size
420g
EAA
-
-
1
Size
500g
BCAA
20:1:1
-
1
Size
450g
BCAA
-
-
1
Size
450g
BCAA
-
-
-
Size
1kg
EAA
-
-
-
Size
360g
EAA
-
-
-
Size
400g
BCAA
10:1:1
-
-
Size
250g - 1kg · 3 sizes
EAA
4:1:1
-
-
Size
700g
BCAA
-
-
-
Size
500g
EAA
-
-
-
Browse All Amino acids Products (50)
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.
Related comparisons
Shop by goal
Pick a target, see the shortlist.
Brand battles
Two brands, one clear winner.
MyproteinBulk
The UK's two biggest DTC brands, head-to-head
ONMyprotein
Premium global vs budget UK favourite
MyproteinProtein Works
Impact Whey vs Whey 80, cheapest per 25g
Power users
Advanced comparison: every product, filteredDense table view with every product, full filter sidebar, and no editorial surfaces.
Methodology
How we rank every bag.
Independent and transparent. Every price is read from the retailer's own page and checked daily. 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 density, measured
Protein per 100g from the product's own nutrition panel, so a 90% isolate and a 72% concentrate are never compared on bag price alone.
03
Real prices, checked daily
Prices come from the retailer's own listing, never an RRP, and we re-check them every day rather than leaving a feed to drift.
04
Rankings can't be bought
Rank order is cost per 25g of protein. Some outbound links earn commission, and some Amazon links marked Ad pay per click; none of them buy a position in the table.
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.
Usually no. A 25g serving of whey provides around 11g of EAAs and 5.5g of BCAAs - already more than a typical BCAA / EAA serving. Aminos become useful mainly in fasted training scenarios or when whey doesn't suit your diet.
Around 2.5 to 3g of leucine per serving triggers maximal muscle protein synthesis - the 'leucine threshold'. Check the leucine column on each card. Brands that underdose leucine to hit a headline ratio are common; a high headline BCAA total with less than 2g leucine is less useful than it sounds.