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
Fatigue 1 0
Muscle weakness 1 1
Soreness after exercise 1 0

Show all 7 reasons taken

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

Side effects

Side effects as an overall problem

Side effects as an overall problem
Severity Evaluations Percentage
Severe 1
Moderate 0
Mild 0
None 0

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

Side effect Patients Percentage
Headaches 1
Nausea 1
Stomach pain 1


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

Dosage Patients Percentage
1 mL weekly 1
1 tsp. daily 1

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

Multiple reasons could be selected

Reason Patients Percentage
Course of treatment ended 1
Did not seem to work 1
Doctor's advice 1
Other 1
Side effects too severe 1
See all 4 patients who've stopped taking Branched-Chain Amino Acids (BCAA)


Currently taking Branched-Chain Amino Acids (BCAA)

Duration Patients Percentage
1 - 2 years 1
5 - 10 years 1

Stopped taking Branched-Chain Amino Acids (BCAA)

Duration Patients Percentage
Less than 1 month 1
1 - 6 months 1
6 months - 1 year 1
1 - 2 years 1
Adherence Evaluations Percentage
Always 1
Usually 0
Sometimes 0
Never taken as prescribed 0
Burden Evaluations Percentage
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).