What it is
Mechanism evidence: human
At a glance
What it is, why people use it, the evidence, and what to know before trying it.
Why people use it
- A serotonin precursor marketed for mood and sleep; clinical evidence is limited and older.
Evidence at a glance
5-HTP may be useful for a defined indication or deficiency, but broad wellness claims exceed the evidence. Match the product form and dose to the research and do not use it to replace indicated medical care.
Confidence: weak
Safety & interactions
Known side effects, interactions and use limits from reviewed sources.
5-HTP can cause nausea and other gastrointestinal effects. Combining it with serotonergic medicines or supplements can cause serotonin toxicity; product contamination and long-term safety are concerns.
Seen in protocols
Public protocols that include 5-HTP. Open one to see the full context and source.
What’s in it
The blend or product stays intact while each known ingredient links to its own reference page.