5-HTP
A direct serotonin precursor derived from Griffonia simplicifolia seeds, used for mood support and sleep improvement.
Quick Reference
- Primary effects
- Better Sleep, Mood & Social Ease
- Also comes with
- Anxiety Relief
- Onset
- 30-60 min (oral)
- Duration
- 4-6 hours
- Intensity
- Mild-moderate
- Legal status
- Legal (US)
- Evidence level
- Research-backed
What it is
5-hydroxytryptophan (5-HTP) is the immediate precursor to serotonin, extracted primarily from the seeds of the African plant Griffonia simplicifolia. Unlike tryptophan—which must compete with other amino acids to cross the blood-brain barrier—5-HTP has direct access to the brain, where it's converted to serotonin within hours [1].
While serotonin itself cannot be taken as a supplement (it doesn't cross the blood-brain barrier), 5-HTP offers a workaround that's been studied extensively since the 1970s. Originally investigated for its effects on mood, researchers found that 5-HTP could reliably increase brain serotonin levels in ways that dietary tryptophan could not [2]. Today, people use 5-HTP primarily for mood regulation and sleep improvement, often cycling it rather than taking it daily to avoid tolerance.
What sets 5-HTP apart from other mood supplements is its direct mechanism—it's not modulating existing neurotransmitter activity, but actually providing the raw material for serotonin synthesis. This makes its effects more predictable but also requires more careful timing and dosing than many botanical alternatives.
Effects
What you're here for
Serotonin conversion to melatonin supports natural sleep onset
Direct serotonin precursor, clinically shown to improve mood in some populations
Also comes with
Increased serotonin may reduce anxiety symptoms
The Science
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Dosage
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Forms & How to Use
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Safety
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Health Disclaimer: This information is for educational purposes only and is not medical advice. Consult a qualified healthcare provider before using any substance, especially if you take medications or have a medical condition.
Legal Status
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Sources & Citations
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