Sertraline and Clothiapine: 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
Sertraline
No brand names on recordClothiapine
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.
You've been prescribed both sertraline (an antidepressant) and clothiapine (an antipsychotic). Each of these can slightly affect the heart's rhythm by lengthening a part of the heartbeat called the QT interval. When two medicines that do this are taken together, that effect can add up, which in rare cases could lead to an irregular heartbeat.
The good news is that this is a theoretical concern, meaning it's a caution based on how these drugs work rather than something that happens to most people. Your care team can manage this by keeping an eye on your heart and adjusting things if needed. Keep taking both as prescribed, and let your doctor know if you feel faint, dizzy, or notice your heart racing.
Effect: Additive QTc prolongation, increasing theoretical risk of ventricular arrhythmias (including torsades de pointes) when sertraline and clothiapine are combined.
Mechanism: Both agents can prolong the QT interval; combined use produces additive pharmacodynamic effects on cardiac repolarization. Neither is a prodrug here, so this is a PD, not PK, interaction.
Evidence: Theoretical. Onset: Unspecified. Severity: Major.
- Assess baseline and periodic ECG (QTc) when clinically warranted.
- Correct electrolytes (K+, Mg2+, Ca2+).
- Review other QT-prolonging drugs and cumulative risk factors (bradycardia, cardiac disease, hepatic impairment).
- Dose may be individualized and monitoring intensified per patient risk.
What happens
Increased risk of cardiac arrhythmias
Interaction Deep Dive
Exercise caution when clothiapine is combined with any medication recognized for prolonging the QTc interval. When drugs that prolong the QT interval are taken together, their effect may be additive to the QTc interval prolonging action of clothiapine, thereby raising the likelihood of cardiac arrhythmias1.
Why it happens (mechanism)
Additive QT interval prolongation
How to manage this interaction
This combination is often used safely with appropriate oversight. Here is what typically happens and what you can do:
- Keep taking both exactly as prescribed unless your doctor tells you otherwise.
- Your care team may monitor you more closely, which can include an ECG to check your heart rhythm and blood tests for electrolytes like potassium and magnesium.
- Doses may be adjusted and individualized based on your personal risk.
- Tell your pharmacist about any other medicines you take, since some also affect heart rhythm.
Call your doctor promptly if you feel dizzy, faint, or notice a fast or irregular heartbeat.
Management is individual — confirm any change with your pharmacist or prescriber.
Common questions
Can I take Sertraline and Clothiapine together?
Sertraline and clothiapine can both prolong the QT interval, so taking them together may add up and slightly raise the risk of an irregular heartbeat. Keep taking both as prescribed and let your care team monitor your heart and electrolytes. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Sertraline and Clothiapine 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 Clothiapine interaction managed?
This combination is often used safely with appropriate oversight. Here is what typically happens and what you can do: Keep taking both exactly as prescribed unless your doctor tells you otherwise. Your care team may monitor you more closely, which can include an ECG to check your heart rhythm and blood tests for electrolytes like potassium and magnesium. Doses may be adjusted and individualized ba… 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 Clothiapine 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: ENTUMIN(R) oral tablets, clotiapine oral tablets. Taro International Ltd (per Ministry of Health), Haifa Bay, Israel, 2020.
Keep reading about Sertraline
Keep reading about Clothiapine
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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