Sertraline and Aripiprazole Lauroxil: 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
Aripiprazole Lauroxil
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.
You've been prescribed Aristada (aripiprazole lauroxil), a long-acting injectable, along with sertraline, an antidepressant. There are two things worth knowing. First, both medicines can slightly affect your heart's rhythm (a change on an ECG called the QT interval), and using them together can add to that effect. Second, sertraline slows down a liver enzyme (called CYP2D6) that helps clear aripiprazole from your body, so the aripiprazole can build up a bit and cause stronger effects or more side effects.
The good news: your care team can manage this by choosing the right dose for you and keeping an eye on things. Don't stop either one on your own, just talk with your doctor or pharmacist.
Effect: Increased aripiprazole exposure plus additive QTc prolongation risk.
Mechanism: Sertraline is a moderate CYP2D6 inhibitor; aripiprazole (the active moiety released from aripiprazole lauroxil) is a CYP2D6 substrate, so its metabolism is reduced and exposure rises. Both agents independently prolong the QT interval, giving an additive PD effect.
- Direction: Increased aripiprazole effect/toxicity; increased arrhythmia risk
- Severity/evidence: Major; probable
- Management: Guidance advises avoiding concomitant use where feasible. If combined, aripiprazole dose reduction may be required; re-titrate upward if sertraline is stopped. Monitor ECG/QTc, electrolytes, and for EPS/sedation/akathisia.
What happens
Increased risk of QT interval prolongation and an increased CYP2D6 substrate exposure
Interaction Deep Dive
The joint use of sertraline (which acts as both a CYP2D6 inhibitor and a QT interval prolonging agent) alongside drugs that are QT prolonging CYP2D6 substrates should be avoided. When taken together with other agents that prolong the QTc interval, there is a heightened risk of QTc prolongation and/or ventricular arrhythmias. It may be necessary to lower the dose of the CYP2D6 substrate. On the other hand, if sertraline is stopped, the dosage of a CYP2D6 substrate may need to be raised1.
Why it happens (mechanism)
Additive QT interval prolongation; inhibition of CYP2D6-substrate metabolism by sertraline
How to manage this interaction
Both medicines can affect heart rhythm, and sertraline can raise aripiprazole levels, so your care team will manage this carefully.
- Keep taking both as prescribed unless your doctor tells you otherwise. Your Aristada dose may need to be adjusted and individualized by your care team.
- Your team may monitor you more closely, which can include ECG checks and blood tests for electrolytes.
- If sertraline is ever stopped, your aripiprazole dose may need to be increased again.
- Tell your prescriber or pharmacist right away if you feel a fast or irregular heartbeat, dizziness, fainting, or unusual restlessness or drowsiness.
Management is individual — confirm any change with your pharmacist or prescriber.
Literature reports
1 report — tap to read
a) Mean plasma levels of risperiDONE 4 to 8 mg/day (a CYP2D6 substrate) rose by roughly 4-fold when PARoxetine 20 mg/day was given concurrently 2.
Common questions
Can I take Sertraline and Aripiprazole Lauroxil together?
Combining Aristada with sertraline can raise aripiprazole levels and add to QT-prolonging effects on the heart. Keep taking both as prescribed and let your care team adjust the dose and monitor you. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Sertraline and Aripiprazole Lauroxil 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 Aripiprazole Lauroxil interaction managed?
Both medicines can affect heart rhythm, and sertraline can raise aripiprazole levels, so your care team will manage this carefully. Keep taking both as prescribed unless your doctor tells you otherwise. Your Aristada dose may need to be adjusted and individualized by your care team. Your team may monitor you more closely, which can include ECG checks and blood tests for electrolytes. If sertraline… Management is individual — always follow your own care team's guidance.
How strong is the evidence for this interaction?
The evidence is graded "probable". Good supporting evidence, though not definitively proven.
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 Aripiprazole Lauroxil 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 (2)
- Product Information: ZOLOFT oral tablets, oral solution, sertraline hydrochloride oral tablets, oral solution. Viatris Specialty LLC (per FDA), Morgantown, WV, 2023. DailyMed
- Product Information: PEXEVA(R) oral tablets, paroxetine mesylate oral tablets. Sebela Pharmaceuticals Inc (per FDA), Roswell, GA, 2023.
Keep reading about Aripiprazole Lauroxil
Keep reading about Sertraline
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