L-Glutamine
L-Glutamine (2-Amino-4-carbamoylbutanoic acid). Dietary Supplement, amino acid.
This page describes what L-Glutamine is and its known risks. It is not medical advice and not a guide to using it. Many of these substances are prescription-only or illegal to use without a prescription. Speak to a doctor.
- Class
- Dietary Supplement
- Legal status
- Over-the-counter (unrestricted)
- Half-life
- Rapidly metabolized/utilized
- Liver strain
- None
- Kidney strain
- None in healthy individuals at recommended doses
- Converts to estrogen
- None
- Suppresses natural hormones
- Not typically
Medical uses
- Gut integrity support in critical illness/post-surgical recovery
- Sickle cell disease (prescription form, L-glutamine oral powder)
What it does in the body
Metabolic
- Supports intestinal cell energy metabolism
- May support immune cell function during heavy training
- Evidence for direct muscle-building/anti-catabolic effect in healthy trained individuals is weak
Forms, half-life and detection
| Form | Half-life | Reported detection window |
|---|---|---|
| Oral (powder/capsule) | Rapidly metabolized/utilized | N/A (not a banned/tested substance) |
Side effects and health risks
Gastrointestinal
- Generally well tolerated
- Mild GI upset at very high doses
Related compounds
Questions
What is the half-life of L-Glutamine?
About Rapidly metabolized/utilized. Half-life is the time for the level in the blood to fall by half.
How long is L-Glutamine detectable?
Testing windows of N/A (not a banned/tested substance) are reported, depending on the test and the person.
Is L-Glutamine legal?
Over-the-counter (unrestricted). Laws differ by country and change; check the rules where you live.
What blood tests matter with L-Glutamine?
Ask a doctor which tests suit you.
What are the side effects of L-Glutamine?
Gastrointestinal: generally well tolerated and mild gi upset at very high doses.
For information only, not medical advice. MyoStats is a tracking tool used at your own discretion. Speak to a doctor before changing your training, diet, medication or anything you take.