Performance
BCAAs
Also known as: Leucine, Isoleucine, Valine, 2:1:1 ratio
A branched-chain amino acid blend in a 2:1:1 leucine-to-isoleucine-to-valine ratio, formulated in instantized (micronized) form for improved solubility. BCAAs support muscle protein synthesis and may reduce exercise-induced fatigue, though whole protein sources provide comparable benefits at lower cost.
Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.
Every BCAAs product we have scored
| # | Product | Score | Per serving |
|---|---|---|---|
| 1 | Thorne Creatine + BCAAs | 92 A | $1.73 |
| 2 | Nutricost L-Isoleucine Capsules | 92 A | $0.30 |
| 3 | BulkSupplements L-Isoleucine Powder | 91 A | $0.05 |
| 4 | NutraBio L-Leucine | 90 A | $0.49 |
| 5 | NutraBio BCAA 2500 | 90 A | $0.56 |
| 6 | Kaged BCAA 2:1:1 | 89 A | $0.42 |
| 7 | Thorne SynaQuell +™ | 88 A | $1.47 |
| 8 | BulkSupplements L-Valine Powder | 86 A- | $0.10 |
| 9 | Thorne Amino Complex - Travel Packs - Berry | 85 A- | $1.20 |
| 10 | Thorne Amino Complex - Travel Packs - Lemon | 85 A- | $1.20 |
| 11 | Thorne Amino Complex - Berry | 84 A- | $1.47 |
| 12 | Thorne Amino Complex - Lemon | 84 A- | $1.47 |
Scored on dose accuracy, form, label transparency and third-party testing. Per-serving cost is list price divided by servings per container. No brand pays to be listed or ranked.
Common questions
How much BCAAs should I take?
The typical range is 5-10g. During training periods
When should I take BCAAs?
Intra-workout or fasted training. Either.
Which form of BCAAs is best?
Powder — Flavored options. Other forms in the catalog: Capsule, Capsules, Tablets, drinks, 2:1:1 ratio blend.
Is BCAAs safe?
Commonly reported: Generally well tolerated. Serious warnings: None. Normal amino acid considerations
Which BCAAs supplement scores highest?
Thorne Creatine + BCAAs, at 92/100. Scored on dose accuracy, form, label transparency and third-party testing — no brand pays to be listed or ranked.
Primary uses
- Muscle preservation
- Intra-workout
- Fatigue reduction
- Muscle protein synthesis
- Exercise recovery
- Muscle preservation during caloric deficit
- Reduction of exercise-induced fatigue
- reduce muscle breakdown (anticatabolic)
- endurance performance
- post-workout recovery
What systematic reviews concluded
Outcomes that systematic reviews of BCAAs reached a verdict on: 1 with a benefit, 1 unclear. Each is quoted from a review and linked to it on PubMed. How these were read.
Reviews found a benefit (1)
“Intake of BCAA favors post-exercise muscle recovery and may improve muscle function.” PMID 33586928
Not enough to say: muscle function.
How it works
- Leucine triggers mTOR
- May reduce muscle breakdown
- Incomplete without other EAAs
Dosage
- Typical range
- 5-10g
- Timing
- Intra-workout or fasted training
- With food
- Either
- Duration
- During training periods
- Special populations
- Fasted training, low protein meals
Forms
- Powder
- Capsule
- Capsules· 70/100
- Tablets· 70/100
- drinks· 70/100
- 2:1:1 ratio blend· 70/100
Safety
Common side effects
- Generally well tolerated
Contraindications
- MSUD (rare genetic)
Products containing BCAAs
Top-scoring supplements in our catalog that list BCAAs on the label. Each product is graded on Formulate's ingredient-level rubric — dose accuracy, form, transparency, and third-party testing.
Evidence notes
Superseded by EAAs or adequate protein, but still useful
Grade B: Some human trials support key claims; further confirmation needed.
BCAAs compared head-to-head
Related in Performance
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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider. Individual needs and risks vary — consult a professional before starting, stopping, or combining supplements, especially if you are pregnant or nursing, taking medication, or managing a health condition.