Panobinostat and Amitriptyline: 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
Amitriptyline
Panobinostat
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. Amitriptyline (Elavil) and panobinostat (Farydak) 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 could lead to an irregular or dangerous 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 like your potassium and magnesium levels. Please don't stop or change either medicine on your own. Just talk with your doctor or pharmacist so they can decide the safest plan for you.
Effect: Additive QT interval prolongation with concurrent amitriptyline and panobinostat, increasing torsades risk.
Mechanism: Pharmacodynamic additive QTc prolongation; both agents independently prolong the QT interval. Neither is a prodrug relevant here.
- Direction/magnitude: Additive PD effect; magnitude unspecified.
- Evidence: Theoretical, but rated major.
- Onset: Unspecified.
Management: Concurrent use is not recommended. If unavoidable, obtain frequent ECG monitoring and correct electrolytes (K+, Mg2+). Interrupt panobinostat if Fridericia-corrected QTc reaches >=480 msec; discontinue if prolongation persists after electrolyte correction. Consider a non-QT-prolonging antidepressant alternative.
What happens
Increased risk of QT interval prolongation
Interaction Deep Dive
Combining panobinostat with agents that prolong the QT interval is discouraged because their effects on the QT interval can be additive. When coadministration with antiemetics recognized to prolong the QT interval cannot be avoided, perform ECG monitoring frequently. Should the Fridericia-corrected QT interval rise to 480 msecs or higher, pause therapy. If prolongation of the QT interval persists even after any electrolyte imbalances have been corrected, stop panobinostat1.
Why it happens (mechanism)
Additive QT interval prolongation
How to manage this interaction
Your care team can manage this safely. Because both drugs can prolong the QT interval, using them together is generally not recommended, but if it is needed your team has clear ways to monitor you.
- Keep taking both medicines exactly as prescribed unless your prescriber tells you otherwise.
- Expect frequent EKG checks and blood tests for electrolytes like potassium and magnesium.
- Your team may pause or stop panobinostat if your QT reading gets too high.
- Ask your pharmacist or doctor whether a different antidepressant that doesn't affect the QT interval might be an option.
Report any fainting, dizziness, or palpitations right away.
Management is individual — confirm any change with your pharmacist or prescriber.
Common questions
Can I take Panobinostat and Amitriptyline together?
Amitriptyline and panobinostat can both prolong the QT interval, and combining them is generally not recommended; if used together your team will monitor your heart with EKGs and check electrolytes. Talk to your doctor or pharmacist before making any changes. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Panobinostat and Amitriptyline 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 Panobinostat and Amitriptyline interaction managed?
Your care team can manage this safely. Because both drugs can prolong the QT interval, using them together is generally not recommended, but if it is needed your team has clear ways to monitor you. Keep taking both medicines exactly as prescribed unless your prescriber tells you otherwise. Expect frequent EKG checks and blood tests for electrolytes like potassium and magnesium. Your team may pause… 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 Panobinostat or Amitriptyline 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: FARYDAK(R) oral capsules, panobinostat oral capsules. Novartis Pharmaceuticals Corporation (per FDA), East Hanover, NJ, 2015. DailyMed
Keep reading about Amitriptyline
Keep reading about Panobinostat
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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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