Direct metabolic precursor to serotonin, derived from Griffonia simplicifolia seeds, bypassing the rate-limiting step in serotonin synthesis; must not be combined with SSRIs, MAOIs, or other serotonergic drugs due to serotonin syndrome risk.
Difficulty falling asleep, staying asleep, or poor sleep quality. Insomnia affects ~30% of adults.
Also known as: 5-Hydroxytryptophan, Griffonia simplicifolia
Every published result for this pair, extracted and audited.
Research volume over time for 5-HTP × sleep issues. Structured outcome extraction (direction, effect size) for this pair is in progress - the full analytics will appear here once audited.
Hand-selected PubMed studies, linked to the originals.
Ordered by strength of evidence, then result direction.
01The effects of oral cannabidiol supplementation on blood pressure in adults: a systematic review of randomised controlled trialsRoberts A, et al. · Journal of cannabis research · 2026PMID 42321899 ↗02Dysregulation of melatonin rhythm in Parkinson's and Huntington's disease: a systematic review and meta-analysisSuram RP, et al. · Frontiers in aging neuroscience · 2025PMID 41143249 ↗03Effects of Dietary Supplementation in Patients with Restless Legs Syndrome: A Systematic ReviewGonzález-Parejo P, et al. · Nutrients · 2024PMID 39064758 ↗04Sleep disturbances and female infertility: a systematic reviewLi J, et al. · BMC women's health · 2024PMID 39707272 ↗05The Role of Magnesium in Sleep Health: a Systematic Review of Available LiteratureBe the first to share what you noticed with 5-HTP for sleep issues. How we calculate this.