5-HTP (5-Hydroxytryptophan) is a naturally occurring amino acid compound, typically derived from the seeds of the African plant Griffonia simplicifolia, that serves as a direct precursor to serotonin — a neurotransmitter involved in mood regulation, sleep, and appetite. Research suggests that 5-HTP supplementation may support mood balance and promote feelings of calm, with several studies indicating potential benefits for anxiety relief, sleep quality, and appetite control. Clinical investigations have also explored its role in managing fibromyalgia symptoms and reducing the frequency of headaches and migraines, with some trials reporting encouraging results. Because 5-HTP interacts closely with serotonin pathways, it has drawn considerable scientific interest as a naturally sourced option for supporting emotional well-being and restful sleep.
Compare this supplementResearch suggests that 5-HTP may offer symptomatic benefit for people with fibromyalgia, with most of the available c...
View studies →Research suggests that 5-HTP may have modest sleep-promoting effects, though the evidence base in humans remains limi...
View studies →Research on the use of 5-HTP for anxiety relief cannot be meaningfully summarized from the available evidence, as the...
View studies →Research on the direct use of 5-HTP for appetite control in humans is not well represented in the available studies r...
View studies →Research on 5-HTP for mood support is not directly addressed by the available linked studies, which are both classifi...
View studies →Both increase serotonin and combining them raises the risk of serotonin syndrome.
View details →Both increase serotonin levels and combining them significantly raises the risk of serotonin synd...
View details →Both are serotonin precursors and combining them may excessively elevate serotonin.
View details →These are commonly referenced dosage ranges for this supplement. They are not medical recommendations. Always consult a healthcare provider before supplementing.
| Form | Dose range | Frequency | Studied for | Source |
|---|---|---|---|---|
| Capsule | 300–400 mg | Daily | appetite control and weight management | Based on RCTs showing reduced caloric intake and appetite suppression at higher doses |
| Capsule | 100 mg | Three times daily | fibromyalgia symptom relief | Used in clinical trials showing improvement in pain, stiffness, and sleep in fibromyalgia patients |
| Capsule | 200–600 mg | Daily | headache and migraine prevention | Based on RCTs comparing 5-HTP to methysergide for migraine prophylaxis |
| Capsule | 50–100 mg | Three times daily | mood support and anxiety relief | Common in clinical trials studying serotonin precursor effects on mood and anxiety |
| Capsule | 100–300 mg | Once daily | sleep quality | Based on RCTs examining 5-HTP effect on sleep onset and quality, typically taken 30–45 minutes before bed |