Sertraline and Ceritinib: 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
Ceritinib
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 of these medicines can affect your heart's rhythm. Ceritinib (Zykadia), a cancer medicine, and sertraline, an antidepressant, can each stretch out a part of your heartbeat called the QT interval. When you take them together, that effect can add up, which in rare cases can lead to an irregular heartbeat.
The good news is that this is a known concern your care team can watch for. They may check your heart with an EKG and keep an eye on things. Please don't stop or change either medicine on your own. Just talk with your doctor or pharmacist about the best plan for you, and let them know if you feel dizzy, faint, or notice a fluttering heartbeat.
Mechanism: Additive QTc prolongation. Ceritinib causes concentration-dependent QTc prolongation; sertraline also carries QT-prolonging potential. Neither is a prodrug relevant here; this is a pharmacodynamic (additive) interaction, not a metabolic one.
- Direction: Additive increase in QTc-prolongation risk and potential torsades de pointes.
- Evidence: Theoretical; magnitude not quantified.
- Onset: Unspecified.
- Management: Avoid concomitant use where possible. If combined, monitor ECGs and correct electrolytes (K+, Mg2+). Withhold, dose-reduce, or discontinue ceritinib for clinically significant QTc prolongation per labeling.
What happens
An increased risk of QT interval prolongation
Interaction Deep Dive
Do not co-administer ceritinib, which produces QTc-interval prolongation in a concentration-dependent manner, alongside another agent that prolongs the QT interval, because the prolonging effects can be additive. When the two are used together, ECGs should be monitored. If QTc interval prolongation occurs, interrupt ceritinib, lower the dose, or stop it permanently as clinically warranted1.
Why it happens (mechanism)
Additive QT interval prolongation
How to manage this interaction
Keep taking both medicines as prescribed unless your care team tells you otherwise. Here is what your team typically does with this combination:
- Consider whether both drugs are truly needed together, or whether an alternative is an option.
- Check your heart rhythm with EKGs during treatment.
- Adjust the ceritinib dose (hold, lower, or stop) if your QT interval becomes prolonged. Your dose may need to be individualized by your care team.
Tell your pharmacist or prescriber about all your medicines, and report any dizziness, fainting, or palpitations right away.
Management is individual — confirm any change with your pharmacist or prescriber.
Common questions
Can I take Sertraline and Ceritinib together?
Taking ceritinib and sertraline together can add to the risk of a heart-rhythm change (QT prolongation), so your care team may run EKGs and adjust or reconsider the medicines. Don't change anything on your own. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Sertraline and Ceritinib 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 Ceritinib interaction managed?
Keep taking both medicines as prescribed unless your care team tells you otherwise. Here is what your team typically does with this combination: Consider whether both drugs are truly needed together, or whether an alternative is an option. Check your heart rhythm with EKGs during treatment. Adjust the ceritinib dose (hold, lower, or stop) if your QT interval becomes prolonged. Your dose may need t… 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 Ceritinib 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: ZYKADIA(R) oral capsules, oral tablets, ceritinib oral capsules, oral tablets. Novartis Pharmaceuticals Corporation (per FDA), East Hanover, NJ, 2019. DailyMed
Keep reading about Ceritinib
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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