Supplements · BCAAs

BCAAS IN AUSTRALIA

Branched-chain amino acids — leucine, isoleucine, and valine. If you are already hitting your daily protein target, BCAAs are largely redundant. Here is the honest breakdown of when they are and are not worth it.

Bottom line

Hit your protein first

If you eat enough protein, BCAAs add little. They are most useful for fasted training or when total protein intake is low.

See BCAA ingredient guide →

BCAA types

All Powder Capsule EAA blends

BCAA types explained

POWDER

BCAA powder

Most common form. Usually flavoured. 2:1:1 ratio of leucine:isoleucine:valine is the standard. Easy to add to water during training.

Price range: $30–$60 / 30 serves

CAPS

BCAA capsules

Unflavoured and convenient. Requires multiple capsules per serve to hit an effective dose. Less practical during training than powder.

Price range: $25–$50 / 30 serves

EAA

Essential amino acids

Contains all 9 essential amino acids including BCAAs. A better investment than standalone BCAAs for most people — more complete amino acid profile.

Price range: $40–$70 / 30 serves

BLEND

BCAA + extras

Often includes electrolytes, glutamine, or citrulline. Can be a useful intra-workout drink if the added ingredients are dosed effectively.

Price range: $45–$80 / 30 serves

Key facts

2:1:1

Leucine ratio

Standard ratio. Leucine is the primary driver of muscle protein synthesis. Higher leucine ratios (4:1:1) exist but evidence is mixed.

5–10g

Effective dose

Per serve. Many products under-dose at 3–4g. Check the label against the serve size — not just the BCAA headline claim.

Intra

Best timing

During training. Most useful for fasted sessions or sessions exceeding 90 minutes where muscle protein breakdown risk increases.

EAAs

Better option

If choosing between BCAAs and EAAs at similar price points, EAAs provide a more complete amino acid profile and better value.

What to look for

✓

2:1:1 leucine ratio — the most researched ratio. Leucine triggers muscle protein synthesis; isoleucine and valine support energy and recovery.

✓

At least 5g per serve — anything under 4g is underdosed relative to the research. Check the total BCAA amount, not just the leucine content.

✓

Consider EAAs instead — for a similar price, EAA products offer all essential amino acids, not just the three branched-chain ones.

✗

Paying a premium if you already hit protein targets — if you consume 1.6g+ of protein per kg of bodyweight daily, BCAAs will add minimal benefit.

✗

Artificial colours and sweeteners in high amounts — check the label if you are sensitive. Many BCAA powders are heavily flavoured with artificial additives.