Dordaviprone 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
Dordaviprone
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 in a specific way. They can each stretch out a part of your heartbeat called the QT interval. Amitriptyline (Elavil) is known to do this, and dordaviprone does it too, in a dose-related way. When you take both together, that effect can add up and, in rare cases, lead to an irregular heartbeat.
This concern is mostly theoretical right now, but because the heart is involved, it's taken seriously. The good news is your care team can manage it well, usually by checking your heart tracing (ECG) and blood minerals, and adjusting things as needed. Please talk with your pharmacist or doctor before changing anything.
Effect: Additive QTc prolongation and increased risk of QTc-associated arrhythmias (e.g., torsades de pointes).
Mechanism: Pharmacodynamic additive QT prolongation. Amitriptyline is a known QT-prolonging TCA; dordaviprone causes concentration-dependent QTc prolongation. No prodrug considerations relevant to the QT effect.
- Direction: Additive PD interaction, increased cardiac risk.
- Evidence: Theoretical; severity major; onset unspecified.
- Management: Avoid combination if possible. If unavoidable, separate administration, obtain baseline and periodic ECG and electrolytes, correct K+/Mg2+. Interrupt/reduce dordaviprone for QT prolongation; discontinue for life-threatening arrhythmia.
What happens
An increased risk of QT interval prolongation
Interaction Deep Dive
Concurrent administration of dordaviprone alongside agents that lengthen the QT interval should be avoided, since the combination can produce additive QT interval prolongation. Dordaviprone produces QTc interval prolongation in a concentration dependent manner and can also heighten the likelihood of arrhythmias linked to QTc. When such combined use is unavoidable, the timing of dordaviprone and the QT prolonging agent should be separated. Obtain ECGs and check electrolytes before initiating dordaviprone, and repeat these assessments at intervals throughout therapy. For patients who experience QT prolongation, dordaviprone should be interrupted or its dose lowered, and it should be stopped permanently in patients showing evidence of life-threatening arrhythmias1.
Why it happens (mechanism)
Additive QT interval prolongation
How to manage this interaction
Your care team can manage this safely. Here is what usually happens:
- Keep taking both exactly as prescribed unless your doctor tells you otherwise.
- Your team may prefer to avoid using them together or, if both are needed, separate when each is taken.
- Expect an ECG (heart tracing) and blood tests for electrolytes (like potassium and magnesium) before starting dordaviprone and then periodically.
- The dordaviprone dose may be adjusted and individualized by your team if your heart tracing changes.
Tell your pharmacist or doctor if you feel fainting, dizziness, palpitations, or a racing/irregular heartbeat.
Management is individual — confirm any change with your pharmacist or prescriber.
Common questions
Can I take Dordaviprone and Amitriptyline together?
Amitriptyline and dordaviprone can each prolong the QT interval, so together they may add up and raise the risk of a dangerous heart rhythm; your team will usually avoid the combination or monitor ECGs and electrolytes closely if both are needed. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Dordaviprone 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 Dordaviprone and Amitriptyline interaction managed?
Your care team can manage this safely. Here is what usually happens: Keep taking both exactly as prescribed unless your doctor tells you otherwise. Your team may prefer to avoid using them together or, if both are needed, separate when each is taken. Expect an ECG (heart tracing) and blood tests for electrolytes (like potassium and magnesium) before starting dordaviprone and then periodically. The… 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 Dordaviprone 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: MODEYSO(TM) oral capsules, dordaviprone oral capsules. Jazz Pharmaceuticals, Inc. (per manufacturer), Palo Alto, CA, 2025. DailyMed
Keep reading about Amitriptyline
Keep reading about Dordaviprone
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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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