Supplement stacks / Buspirone + St Johns Wort
Can You Take Buspirone with St Johns Wort?
Buspirone and St Johns Wort: one interaction flagged, scored 3/10 (high risk). The count and score come from an AI-written analysis checked against our interaction rules, which can only make it stricter. Not medical advice.
Safety at a glance
This score comes from an AI-written analysis of the pair. Our interaction rules check it and can only make it stricter, never milder. Informational only: it can't account for your medications, conditions, or genetics.
What the AI-written analysis says
Buspirone is an anxiolytic medication that may interact with St. John's Wort, a herbal supplement often used for depression and anxiety. St. John's Wort can induce cytochrome P450 enzymes, potentially affecting the metabolism of buspirone, leading to altered drug levels. Iron supplementation does not have a direct interaction with either buspirone or St. John's Wort but should be monitored for absorption issues. Caution is advised when combining these substances.
Buspirone is a prescription medication. This page describes publicly documented interactions — it can't see your dose, your other prescriptions, or your labs. Discuss any supplement with the prescriber or pharmacist who manages this medication before combining.
Known interactions
St. John's Wort may reduce the effectiveness of buspirone by increasing its metabolism.
Buspirone
From the AI-written analysis.
Generally well-tolerated; may cause dizziness or drowsiness.
Typical dosage: As prescribed or as directed on the label
- Dizziness
- Nausea
- Headache
- Avoid combining with St. John's Wort without medical supervision; monitor for increased side effects.
St. John's Wort
From the AI-written analysis.
Generally 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 buspirone; consult healthcare provider before use.
- Monitor for increased side effects of buspirone.
Also commonly mentioned
These come up in questions about this combination. They are not part of the pair above. From the AI-written analysis.
Iron
Safe when taken as directed; excessive intake can lead to toxicity.
Typical dosage: 8-18 mg daily, depending on age and gender.
- Constipation
- Nausea
- Stomach upset
- Take iron supplements separately from other medications to avoid absorption issues; ideally 2 hours apart.
Timing
No timing arrangement makes this combination safe — see the warnings above.
Recommendations
- Consult with a healthcare provider before combining St. John's Wort with buspirone.
- Consider monitoring mood and anxiety levels closely if combining these substances.
Watch out for
- Combining two or more serotonergic substances can raise the risk of serotonin syndrome, a potentially serious reaction. Ask a pharmacist, or the prescriber if any of these was prescribed, before you combine them. If any of these is a prescription, do not stop or change it on your own. Seek care for agitation, confusion, tremor, sweating, rapid heartbeat, or high fever.
- No timing arrangement makes this combination safe — see the warnings above.
Frequently asked questions
Can you take Buspirone and St Johns Wort together?
Buspirone and St Johns Wort: one interaction flagged, scored 3/10 (high risk). The count and score come from an AI-written analysis checked against our interaction rules, which can only make it stricter. Not medical advice.
What score does the Buspirone and St Johns Wort combination get?
The Buspirone and St Johns Wort combination is scored 3/10 (high risk). The score comes from an AI-written analysis checked against our interaction rules, which can only make it stricter. Not medical advice. Always confirm with a healthcare professional.
When should you take Buspirone and St Johns Wort?
No timing arrangement makes this combination safe — see the warnings above.
What should you watch out for when combining Buspirone and St Johns Wort?
Combining two or more serotonergic substances can raise the risk of serotonin syndrome, a potentially serious reaction. Ask a pharmacist, or the prescriber if any of these was prescribed, before you combine them. If any of these is a prescription, do not stop or change it on your own. Seek care for agitation, confusion, tremor, sweating, rapid heartbeat, or high fever. No timing arrangement makes this combination safe — see the warnings above.
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Not medical advice
AI-written analysis generated August 11, 2026, checked by our interaction rules · How our analysis works