Bupropion and Sertraline: 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 recordBupropion
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.
These two medicines, sertraline (an antidepressant) and bupropion (used for depression or to quit smoking), are often prescribed together on purpose. But there are two things worth knowing. First, bupropion can slow down how your body breaks down sertraline, so a bit more sertraline may build up in your system. Second, both medicines can slightly lower your seizure threshold, meaning they can make a seizure a little more likely, especially at higher doses.
Please don't worry or stop anything on your own. Your care team knows how to handle this by starting bupropion low, going up slowly, and watching how you feel. If you ever have a seizure, get medical help right away.
Mechanism: Bupropion inhibits CYP2D6, which contributes to sertraline metabolism, potentially increasing sertraline exposure (AUC/Cmax). Both agents also lower the seizure threshold, giving an additive pharmacodynamic risk. Neither is a prodrug requiring activation here, so inhibition raises sertraline effect rather than reducing it.
- Direction: increased sertraline exposure; additive seizure risk.
- Evidence: theoretical; severity: major; onset unspecified.
- Management: initiate bupropion low and titrate gradually; respect max doses (IR 450 mg/day, XL 300 mg/day, SR 400 mg/day). Sertraline dose may need reduction and individualization. Monitor for serotonergic/CNS effects. If a seizure occurs, discontinue bupropion and do not reinitiate.
What happens
Increased sertraline exposure, an increased risk of seizure, severe head injury, arteriovenous malformations, CNS tumor or CNS infection
Interaction Deep Dive
Taking buPROPion (a CYP2D6 inhibitor) together with sertraline (a CYP2D6 substrate) can raise sertraline exposure, so a reduction in the sertraline dose may be warranted when the two are given at the same time. BuPROPion carries a dose-dependent seizure risk, and combining it with other agents that lower the seizure threshold heightens that risk. Because sertraline also lowers the seizure threshold, exercise extreme caution when it is coadministered with buPROPion. Initiate buPROPion at a low starting dose and titrate upward slowly. Should a seizure occur, stop buPROPion and do not restart it. Tablet dosing should not go above 450 mg/day 1, the extended-release form should not surpass 300 mg once daily 2, and the sustained-release form should not exceed 400 mg/day 3.
Why it happens (mechanism)
Inhibition of CYP2D6-mediated metabolism of sertraline; additive lowering of the seizure threshold
How to manage this interaction
This combination is used clinically, and your care team can manage it safely.
- Keep taking both as prescribed unless your prescriber tells you otherwise.
- Your team will usually start bupropion at a low dose and increase it slowly, and stay within the recommended maximum daily dose.
- Your sertraline dose may need to be adjusted and individualized by your care team, and they may monitor you more closely.
- Tell your pharmacist or doctor about anything that could raise seizure risk (heavy alcohol use, other seizure-lowering drugs, skipping meals).
Seek emergency care if you have a seizure. Ask your pharmacist before adding any new medicines.
Management is individual — confirm any change with your pharmacist or prescriber.
Literature reports
1 report — tap to read
a) When buPROPion (a CYP2D6 inhibitor) 150 mg twice daily was given together with a single 50 mg dose of desipramine (a CYP2D6 substrate) in healthy volunteers who were extensive CYP2D6 metabolizers (n=15), desipramine Cmax rose 2-fold, AUC rose 5-fold, and t(1/2) rose 2-fold. This effect continued for 7 days after the final buPROPion dose 2314.
Common questions
Can I take Bupropion and Sertraline together?
Sertraline and bupropion can be combined, but bupropion may raise sertraline levels and both can slightly increase seizure risk, so your team will start bupropion low, titrate slowly, and monitor you. Get emergency help if you have a seizure. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Bupropion and Sertraline 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 Bupropion and Sertraline interaction managed?
This combination is used clinically, and your care team can manage it safely. Keep taking both as prescribed unless your prescriber tells you otherwise. Your team will usually start bupropion at a low dose and increase it slowly, and stay within the recommended maximum daily dose. Your sertraline dose may need to be adjusted and individualized by your care team, and they may monitor you more close… 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 Bupropion or Sertraline 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 (4)
- Product Information: WELLBUTRIN(R) oral tablets, bupropion hydrochloride oral tablets. GlaxoSmithKline (per FDA), Durham, NC, 2024. DailyMed
- Product Information: WELLBUTRIN XL(R) oral extended-release tablets, bupropion hydrochloride oral extended-release tablets. Bausch Health US, LLC (per FDA), Bridgewater, NJ, 2024. DailyMed
- Product Information: WELLBUTRIN(R) SR oral sustained-release tablets, bupropion hydrochloride oral sustained-release tablets. GlaxoSmithKline (per FDA), Durham, NC, 2024. DailyMed
- Product Information: FORFIVO XL(R) oral extended-release tablets, bupropion hydrochloride oral extended-release tablets. TWi Pharmaceuticals USA, Inc (per FDA), Paramus, NJ, 2024. DailyMed
Keep reading about Sertraline
Keep reading about Bupropion
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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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