At a Glance 5-Hydroxytryptophan (5-HTP) is the direct metabolic precursor to serotonin and melatonin, extracted from the seeds of Griffonia simplicifolia. Unlike tryptophan (which requires conversion to 5-HTP before becoming serotonin), 5-HTP crosses the blood-brain barrier efficiently and…
In the full monograph
- What it is, and how it works
- What the evidence shows — randomized trials, observational data, animal studies, graded and cited
- Dose, form, and timing
- What to expect, and how soon
- Who should be careful, and what to check first
- The verdict
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