What is Branched-Chain Amino Acids (BCAA)?

Category: Supplements

Most popular types: Optimum Nutrition BCAA Precision Engineered BCAA


See also: Valine, Leucine, Isoleucine

The phrase branched-chain amino acids or BCAA is sometimes used to refer to the amino acids having aliphatic side-chains that are non-linear. BCAA’s are currently used clinically to aid in the recovery of burn victims, as well as for supplementation for strength athletes.

Reported purpose & perceived effectiveness
Purpose Patients Evaluations Perceived Effectiveness
General health 3 0
Improve flexibility/strength 2 0
Compulsive exercising 1 0
Muscle weakness 1 1
Soreness after exercise 1 0
Walking problems 1 0

  • Major
  • Moderate
  • Slight
  • None
  • Can't tell

Side effects

Side effects as an overall problem

Side effects as an overall problem
Severity Evaluations

Commonly reported side effects and conditions associated with Branched-Chain Amino Acids (BCAA)

Side effect Patients
Headaches 1
Nausea 1
Stomach pain 1


Based on patients currently taking Branched-Chain Amino Acids (BCAA)

Dosage Patients
1 tsp. daily 1
2 tab(s) daily 1
8,000 mg daily 1

Why patients stopped taking Branched-Chain Amino Acids (BCAA)

Multiple reasons could be selected

Reason Patients
Course of treatment ended 1
Doctor's advice 1
Side effects too severe 1
See all 3 patients who've stopped taking Branched-Chain Amino Acids (BCAA)


Currently taking Branched-Chain Amino Acids (BCAA)

Duration Patients
1 - 6 months 1
2 - 5 years 1
10 years or more 1

Stopped taking Branched-Chain Amino Acids (BCAA)

Duration Patients
Less than 1 month 1
1 - 6 months 1
6 months - 1 year 1
Adherence Evaluations
Always 1
Usually 0
Sometimes 0
Never taken as prescribed 0
Burden Evaluations
Very hard to take 0
Somewhat hard to take 0
A little hard to take 1
Not at all hard to take 0
Last updated:
There are no evaluations for Branched-Chain Amino Acids (BCAA).