Supplement stacks / 5-HTP + St Johns Wort
Can You Take 5-HTP with St Johns Wort?
Taking 5-HTP with St. John's Wort may increase the risk of serotonin syndrome due to their combined effects on serotonin levels. Both supplements have limited evidence regarding their efficacy and safety, and potential interactions should be monitored closely. Consultation with a healthcare provider is strongly recommended before combining these supplements.
Conservative, AI-assisted reading of publicly available medical sources (NIH, Mayo Clinic, WebMD, Examine.com). Informational only — it can't account for your medications, conditions, or genetics.
Suggestion: Consult healthcare provider before use.
Generally well-tolerated; may cause gastrointestinal issues and drowsiness.
Typical dosage: 50-300 mg daily, divided into doses.
- Nausea
- Diarrhea
- Drowsiness
- May increase serotonin levels; caution advised when combined with other serotonergic agents.
- Consult healthcare provider if taking other medications.
Generally considered safe for short-term use; may cause photosensitivity and gastrointestinal upset.
Typical dosage: 300-900 mg daily, divided into doses.
- Gastrointestinal upset
- Fatigue
- Photosensitivity
- May interact with various medications, including antidepressants and anticoagulants.
- Consult healthcare provider if taking other medications.
Take supplements at least 4 hours apart to minimize interaction risk.
- Consult a healthcare provider before combining St. John's Wort and 5-HTP.
- Consider monitoring for symptoms of serotonin syndrome, such as confusion, rapid heart rate, and increased blood pressure.
- Monitor for signs of serotonin syndrome; if symptoms occur, discontinue use and seek medical attention.
Can you take 5-HTP and St Johns Wort together?
Taking 5-HTP with St. John's Wort may increase the risk of serotonin syndrome due to their combined effects on serotonin levels. Both supplements have limited evidence regarding their efficacy and safety, and potential interactions should be monitored closely. Consultation with a healthcare provider is strongly recommended before combining these supplements.
How safe is the 5-HTP and St Johns Wort combination?
Our analysis of publicly available medical sources scores this combination 3/10 (high risk). This is an informational estimate, not medical advice — always confirm with a healthcare professional.
When should you take 5-HTP and St Johns Wort?
Take supplements at least 4 hours apart to minimize interaction risk.
What should you watch out for when combining 5-HTP and St Johns Wort?
Monitor for signs of serotonin syndrome; if symptoms occur, discontinue use and seek medical attention.
Taking more than these two? Run your complete supplement list — plus any medications — through the live checker for a combined analysis.
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Analysis generated August 11, 2026 · Sources include NIH, Mayo Clinic, WebMD, and Examine.com · How our analysis works