Sertraline and Pitolisant: 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 recordPitolisant
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 sertraline (an antidepressant) and pitolisant (Wakix, used for excessive sleepiness). There are two things to know when they're taken together. First, both medicines can slightly affect your heart's rhythm, and combining them can add to that effect. Second, sertraline slows down an enzyme (called CYP2D6) that helps your body clear pitolisant, so more pitolisant can build up in your system.
This doesn't mean something is wrong. It simply means your care team may keep a closer eye on things and may fine-tune your pitolisant dose. Please don't stop or change either medicine on your own, just talk with your pharmacist or doctor.
Effect: Increased risk of QT prolongation plus increased pitolisant exposure.
- Mechanism: Additive QTc prolongation; sertraline inhibits CYP2D6, reducing metabolism of pitolisant (a CYP2D6 substrate), raising its AUC/Cmax. Pitolisant is active drug, not a prodrug, so inhibition increases its effect.
- Direction: Increased pitolisant exposure and additive cardiac risk.
- Evidence/severity: Probable; rated major.
- Management: Avoid concomitant use where possible. If used together, pitolisant dose reduction may be required and closer QTc/ECG monitoring is prudent. If sertraline is discontinued, an increase in pitolisant dose may be needed.
What happens
Increased risk of QT interval prolongation and an increased CYP2D6 substrate exposure
Interaction Deep Dive
Do not combine sertraline (which both inhibits CYP2D6 and prolongs the QT interval) with medications that are CYP2D6 substrates and also prolong the QT interval. Using additional agents that extend the QTc interval concurrently raises the likelihood of QTc prolongation and/or ventricular arrhythmias. It may become 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
Here's how a care team typically handles this combination:
- Avoiding it when possible: your prescriber may consider an alternative to one of the two drugs.
- Dose tailoring: your pitolisant dose may need to be adjusted and individualized by your care team, since sertraline can raise its levels.
- Closer monitoring: your team may check your heart rhythm (ECG) more closely because both drugs can affect the QT interval.
Keep taking both exactly as prescribed unless told otherwise. Let your pharmacist or doctor know about symptoms like fainting, palpitations, or a racing/irregular heartbeat, and remind them if sertraline is ever stopped, since your pitolisant dose may then need to go back up.
Management is individual — confirm any change with your pharmacist or prescriber.
Literature reports
1 report — tap to read
a) When risperiDONE 4 to 8 mg/day (a CYP2D6 substrate) was given together with PARoxetine 20 mg/day, its mean plasma concentrations rose by roughly 4-fold 2.
Common questions
Can I take Sertraline and Pitolisant together?
Combining sertraline and pitolisant can raise pitolisant levels and add to heart-rhythm (QT) effects, so this pairing is often avoided. If you take both, your care team can manage it by adjusting your pitolisant dose and monitoring your heart, so keep taking them as prescribed and check in with your pharmacist or doctor. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Sertraline and Pitolisant 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 Pitolisant interaction managed?
Here's how a care team typically handles this combination: Avoiding it when possible: your prescriber may consider an alternative to one of the two drugs. Dose tailoring: your pitolisant dose may need to be adjusted and individualized by your care team, since sertraline can raise its levels. Closer monitoring: your team may check your heart rhythm (ECG) more closely because both drugs can affect t… 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 Pitolisant 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 Sertraline
Keep reading about Pitolisant
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.
Check another combination
Our instant two-drug interaction checker is almost here.
Still have questions about this combination?
Every question gets a real answer from a licensed pharmacist — free, and usually within a day.
Ask the pharmacist