Supplement stacks / Mirtazapine + St Johns Wort
Can You Take Mirtazapine with St Johns Wort?
Combining St. John's Wort with mirtazapine may lead to reduced effectiveness of mirtazapine due to St. John's Wort's induction of certain liver enzymes. This combination could potentially increase the risk of side effects or reduce therapeutic effects. Caution is advised, and consultation with a healthcare provider is essential.
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.
Generally well-tolerated; however, it can cause sedation and weight gain.
Typical dosage: 15-45 mg daily, taken at bedtime
- Drowsiness
- Increased appetite
- Dry mouth
- Monitor for increased sedation or side effects when combined with other sedatives.
Generally considered safe for short-term use; however, it can interact with various medications.
Typical dosage: 300-900 mg daily, divided into doses
- Gastrointestinal upset
- Fatigue
- Allergic skin reactions
- May interact with antidepressants, including mirtazapine; consult healthcare provider before use.
These come up in questions about this combination — they are not part of the pair above.
Omega-3 Fatty Acids
Generally safe; may support mood and cognitive function.
Typical dosage: 1000-3000 mg daily
- Fishy aftertaste
- Gastrointestinal discomfort
- Consult healthcare provider if on anticoagulants.
L-Theanine
Considered safe; may promote relaxation without sedation.
Typical dosage: 100-400 mg daily
- Headache
- Dizziness
- Consult healthcare provider if taking other medications affecting mood.
Vitamin D3
Generally safe; important for overall health and mood regulation.
Typical dosage: 600-2000 IU daily
- Nausea
- Constipation
- Monitor levels if taking high doses; consult healthcare provider.
St. John's Wort should be taken consistently at the same time each day to maintain stable levels in the body. Mirtazapine is typically taken at bedtime due to its sedative effects.
- Avoid combining St. John's Wort with mirtazapine without consulting a healthcare provider due to potential interactions.
Can you take Mirtazapine and St Johns Wort together?
Combining St. John's Wort with mirtazapine may lead to reduced effectiveness of mirtazapine due to St. John's Wort's induction of certain liver enzymes. This combination could potentially increase the risk of side effects or reduce therapeutic effects. Caution is advised, and consultation with a healthcare provider is essential.
How safe is the Mirtazapine and St Johns Wort combination?
Our analysis of publicly available medical sources scores this combination 4/10 (high risk). This is an informational estimate, not medical advice — always confirm with a healthcare professional.
When should you take Mirtazapine and St Johns Wort?
St. John's Wort should be taken consistently at the same time each day to maintain stable levels in the body. Mirtazapine is typically taken at bedtime due to its sedative effects.
What should you watch out for when combining Mirtazapine and St Johns Wort?
Avoid combining St. John's Wort with mirtazapine without consulting a healthcare provider due to potential interactions.
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