supplement

5-HTP

Also known as: 5-Hydroxytryptophan, Griffonia

Chemical structure of 5-HTP (PubChem CID 144)
Structure via PubChem
Half-life
6 h
Typical timing
bedtime
Food rule
either
Default unit
mg

Studied for

Overview

5-HTP, or 5-Hydroxytryptophan, is a naturally occurring amino acid and chemical precursor to the neurotransmitter serotonin. It is derived from the seeds of the African plant *Griffonia simplicifolia*. In the body, 5-HTP is converted into serotonin, a crucial neurotransmitter involved in regulating mood, sleep, appetite, and pain sensation. Because it crosses the blood-brain barrier more readily than tryptophan (another serotonin precursor), 5-HTP is sometimes used as a supplement to support serotonin levels in the brain. Unlike tryptophan, 5-HTP is not converted to niacin or proteins, primarily serving as a direct precursor to serotonin. Its role in serotonin synthesis has led to interest in its potential applications for various conditions linked to serotonin imbalance.

Deep dive

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Known interactions

  • Category rule: glp1 × supplement
    Note

    GLP-1 medications slow stomach emptying, changing how/when oral supplements absorb; rapid weight loss raises the importance of protein and micronutrients.

    Time oral supplements when nausea is lowest; prioritize protein and micronutrients; discuss with your provider.

  • Category rule: supplement × medication
    Note

    Some supplements change how the body processes medications (absorption, liver enzymes, or additive effects).

    Specific pairs are checked against a licensed drug database and shown with their own severity. Always confirm with your provider or pharmacist.

  • Compound-pair rule
    Avoid

    5-HTP raises serotonin and layered onto an SSRI/SNRI risks serotonin syndrome.

    Avoid combining 5-HTP with prescription serotonergic antidepressants.

  • Compound-pair rule
    Avoid

    5-HTP raises serotonin and layered onto an SSRI/SNRI risks serotonin syndrome.

    Avoid combining 5-HTP with prescription serotonergic antidepressants.

  • Compound-pair rule
    Avoid

    5-HTP raises serotonin and layered onto an SSRI/SNRI risks serotonin syndrome.

    Avoid combining 5-HTP with prescription serotonergic antidepressants.

  • Compound-pair rule
    Avoid

    5-HTP raises serotonin and layered onto an SSRI/SNRI risks serotonin syndrome.

    Avoid combining 5-HTP with prescription serotonergic antidepressants.

  • Compound-pair rule
    Avoid

    5-HTP raises serotonin and layered onto an SSRI/SNRI risks serotonin syndrome.

    Avoid combining 5-HTP with prescription serotonergic antidepressants.

Frequently asked

Sources referenced

* NIH Office of Dietary Supplements (ODS) * MedlinePlus * PubChem * Mayo Clinic * Cochrane Library * Examine.com * DrugBank

Stackwise compiles summaries from publicly available scientific and regulatory references. Always verify important decisions with a licensed clinician.

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Related benefits

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