5-HTP (5-Hydroxytryptophan)
5-hydroxy-L-tryptophan. Dietary Supplement, amino acid derivative.
This page describes what 5-HTP (5-Hydroxytryptophan) 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
- ~2-4 hours
- Liver strain
- None at typical doses
- Kidney strain
- None at typical doses
- Converts to estrogen
- None
- Suppresses natural hormones
- Not typically
Medical uses
- Investigational for low mood
What it does in the body
Neurological
- Precursor of serotonin and melatonin
Forms, half-life and detection
| Form | Half-life | Reported detection window |
|---|---|---|
| Oral (capsule) | ~2-4 hours | N/A (not a banned substance) |
Side effects and health risks
Gastrointestinal
- Nausea
Interactions
- Risk of serotonin syndrome with antidepressants, triptans, tramadol and similar drugs
Related compounds
Questions
What is the half-life of 5-HTP (5-Hydroxytryptophan)?
About ~2-4 hours. Half-life is the time for the level in the blood to fall by half.
How long is 5-HTP (5-Hydroxytryptophan) detectable?
Testing windows of N/A (not a banned substance) are reported, depending on the test and the person.
Is 5-HTP (5-Hydroxytryptophan) legal?
Over-the-counter (unrestricted). Laws differ by country and change; check the rules where you live.
What blood tests matter with 5-HTP (5-Hydroxytryptophan)?
Ask a doctor which tests suit you.
What are the side effects of 5-HTP (5-Hydroxytryptophan)?
Gastrointestinal: nausea. Interactions: risk of serotonin syndrome with antidepressants, triptans, tramadol and similar drugs.
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.