5-HTP
Full ranking Dose tool Products (373)
Key facts
Daily Value (US FDA)—
Tolerable Upper Intake Level (UL)— Reference upper value (cited, not a UL): 300 mg
Median (Per day)100 mgP5 25 – P95 200
Products373
Sources: https://webprod.hc-sc.gc.ca/nhpid-bdipsn/atReq?atid=5htp&lang=eng · Health Canada NNHPD monograph: 100-900 mg 5-HTP/day depending on use; not to exceed 300 mg per single dose
Daily dose across products (mg/day)
Reference upper value (cited, not a UL) 300
5 mglog scale · n=373400 mg
Label data from official national databases and brand websites, as declared; not lab-verified.
Common questions
Is there an official upper limit for 5-HTP?
No UL has been set. We use a cited reference upper value of 300 mg per day. It comes from the linked study or assessment and is not a regulatory limit. [source]
How much 5-HTP do products usually contain per day?
As of 2026-11-01, 373 products list a comparable daily dose (380 dose records; one product can have several). The median is 100 mg per day, and 90% of records fall between 25 and 200 mg. Figures come from labels and are not lab-tested. [source]
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For information only; not medical advice. Talk to a doctor or pharmacist before starting or stopping any supplement.