Sertraline and Itraconazole: Interaction Details
AI-assisted, pharmacist-reviewed · AI content regenerated Jul 11, 2026 · Source data updated Jul 2, 2026 · Sources: FDA labeling, DDInter 2.0, cited literature
Itraconazole
Sertraline
No brand names on record
How we grade severity & evidence
Severity levels
- Contraindicated: These should generally not be used together.
- Major: Potentially serious — often needs a change or close monitoring.
- Moderate: Can be significant — usually manageable with monitoring.
- Minor: Usually limited clinical impact.
Evidence grades
- Established: Well documented — supported by controlled studies or strong clinical data.
- Probable: Good supporting evidence, though not definitively proven.
- Suspected: Some evidence suggests this interaction, but it is not well established.
- Possible: Limited or conflicting evidence; the interaction may occur.
- Theoretical: Predicted from the drugs' pharmacology; not yet confirmed in people.
Ratings come from the documented interaction literature and are reviewed by a pharmacist. They describe the documented risk of the combination, not what will necessarily happen to you — your dose, timing, and health picture all matter.
Both itraconazole (an antifungal) and sertraline (an antidepressant) can each affect your heart's electrical rhythm in a small way. Doctors call this QT prolongation. When you take them together, that effect can add up and, in rare cases, could lead to an irregular heartbeat.
Right now this concern is mostly theoretical, meaning it's based on how the drugs work rather than lots of real-world reports. Still, it's worth taking seriously. Please don't stop either medicine on your own. Talk with your pharmacist or doctor, who can decide the safest plan for you and keep an eye on your heart if needed.
Effect: Additive QT interval prolongation, with a theoretical increased risk of ventricular arrhythmias (including torsades de pointes) when itraconazole and sertraline are combined.
- Mechanism: Pharmacodynamic additive effect on cardiac repolarization; both agents carry independent QT-prolonging potential. Neither is a prodrug in this context.
- Direction: Additive PD interaction (increased arrhythmia risk), not a PK change.
- Evidence: Theoretical; onset unspecified.
- Management: Avoid coadministration where feasible. If combined, correct electrolytes (K+, Mg2+), review other QT-prolonging drugs, and consider baseline and follow-up ECG monitoring.
What happens
An increased risk of QT interval prolongation
Interaction Deep Dive
Concurrent use of sertraline with this drug should be avoided, because such a combination may raise the likelihood of QT prolongation and/or ventricular arrhythmias1.
Why it happens (mechanism)
Additive QT interval prolongation
How to manage this interaction
Your care team can manage this safely. The documented guidance is to avoid using these two together when possible, so your prescriber may choose a different antifungal or antidepressant.
- Keep taking both as prescribed unless your doctor or pharmacist tells you otherwise.
- If they are used together, your team may monitor you more closely, including checking your heart rhythm (ECG) and blood electrolytes.
- Tell your team about any other medicines you take, since some also affect heart rhythm.
- Report any fainting, palpitations, dizziness, or a racing/irregular heartbeat right away.
Management is individual — confirm any change with your pharmacist or prescriber.
Common questions
Can I take Sertraline and Itraconazole together?
Combining itraconazole and sertraline may add up to a higher risk of a heart rhythm problem, so the general advice is to avoid using them together. Talk with your pharmacist or doctor, who can pick a safer option or monitor your heart. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Sertraline and Itraconazole interaction?
It is rated major. Potentially serious — often needs a change or close monitoring.
How quickly could this interaction happen?
The documented onset is "unspecified". The timing of this interaction is not well characterized.
How is the Sertraline and Itraconazole interaction managed?
Your care team can manage this safely. The documented guidance is to avoid using these two together when possible, so your prescriber may choose a different antifungal or antidepressant. Keep taking both as prescribed unless your doctor or pharmacist tells you otherwise. If they are used together, your team may monitor you more closely, including checking your heart rhythm (ECG) and blood electrol… Management is individual — always follow your own care team's guidance.
How strong is the evidence for this interaction?
The evidence is graded "theoretical". Predicted from the drugs' pharmacology; not yet confirmed in people.
From our Q&A
Real reader questions about these medications, each personally answered by our pharmacist:
Questions for your pharmacist
- Does my dose of Sertraline or Itraconazole need adjusting while I take them together?
- What symptoms should prompt me to call you or my prescriber right away?
- Does the timing of my doses matter for this combination?
- Is there a safer alternative to one of these medications for me?
References (1)
- Product Information: ZOLOFT oral tablets, oral solution, sertraline hydrochloride oral tablets, oral solution. Viatris Specialty LLC (per FDA), Morgantown, WV, 2023. DailyMed
Keep reading about Itraconazole
Keep reading about Sertraline
These medications also interact with supplements
Prescription drugs aren't the whole picture — herbal and dietary supplements can interact with them too. From the evidence-graded Natural Medicines database:
major · moderate · minor — check everything you take with our drug–supplement interaction checker.
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