Branched-chain amino acids (BCAAs) are a group of three essential amino acids: leucine, isoleucine, and valine. These amino acids are termed "essential" because the human body cannot produce them, so they must be obtained through diet, typically from protein-rich foods like meat, dairy, and legumes. BCAAs are particularly concentrated in muscle tissue, and they play a significant role in muscle protein synthesis, which has made them a popular supplement among athletes and fitness enthusiasts. R

How many studies on BCAAs are available?

NutriVouch references 187 human studies on BCAAs, all peer-reviewed and indexed on PubMed.

Is BCAAs effective for Exercise Performance?

For Exercise Performance, BCAAs has an effectiveness score of 4/10 — weak or limited clinical evidence. Based on 14 relevant studies.

Is BCAAs effective for Liver Support?

For Liver Support, BCAAs has an effectiveness score of 4/10 — weak or limited clinical evidence. Based on 10 relevant studies.

Is BCAAs effective for Endurance?

For Endurance, BCAAs has an effectiveness score of 3/10 — weak or limited clinical evidence. Based on 19 relevant studies.

Is BCAAs effective for Mood Support?

For Mood Support, BCAAs has an effectiveness score of 2/10 — minimal evidence — marketed but thinly supported. Based on 5 relevant studies.

Is BCAAs effective for Energy Levels?

For Energy Levels, BCAAs has an effectiveness score of 2/10 — minimal evidence — marketed but thinly supported. Based on 18 relevant studies.

Confidence level

Moderate evidence

187 studies

BCAAs

Absorption

✦Can be taken with or without food. Consuming around workouts may support muscle protein synthesis and recovery.

Daily Dose

⚖

Common dose: 5–20 grams daily

RDA: No official RDA established

Upper limit: Not established

Best form: Free-form powder or capsule

Timing: Before or after exercise for potential benefits

BCAAs are not essential if adequate protein intake is achieved through diet. Consult a healthcare provider if considering high doses or if you have a medical condition.

Effects

🏃 Exercise Performance

Food Sources

Chicken breast6.6g per 100g
Eggs1.3g per 2 large eggs
Beef6.8g per 100g
Tuna5.2g per 100g
Greek yogurt2.1g per 200g