Amino acids
L-glutamine
Also called: glutamine
The most common amino acid in the blood; fuel for gut and immune cells.
- Why people take it
- Gut health, muscle recovery, immunity.
- What the evidence says
- Helps in some hospital situations (burns, critical illness). Little benefit for healthy athletes.
- How it is usually taken
- Usually 5 to 10 g a day as powder.
- Be careful
- Avoid with liver disease or a history of seizures unless a doctor advises.
- Medicines it can interact with
- People with liver disease should avoid it. May reduce the effect of some anti-epileptics.
Other amino acids
Common questions
What is L-glutamine?
The most common amino acid in the blood; fuel for gut and immune cells.
Why do people take L-glutamine?
Gut health, muscle recovery, immunity.
Does L-glutamine work?
Helps in some hospital situations (burns, critical illness). Little benefit for healthy athletes.
How much L-glutamine do people take?
Usually 5 to 10 g a day as powder.
Is L-glutamine safe?
Avoid with liver disease or a history of seizures unless a doctor advises.
Does L-glutamine interact with medicines?
People with liver disease should avoid it. May reduce the effect of some anti-epileptics.
Sources and further reading
Last reviewed 31 October 2026. Written by Satya Babu.
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