Metoprolol 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 recordMetoprolol
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.
Here's what's going on. Your body uses an enzyme called CYP2D6 to break down metoprolol (Lopressor, Toprol). Sertraline can slow that enzyme down a bit. When the enzyme works slower, metoprolol can build up in your system, which may make its effects stronger. That could mean a slower heart rate, lower blood pressure, or feeling more tired or lightheaded than usual.
The good news: this concern is mostly theoretical, and your care team can manage it easily. Keep taking both medicines as prescribed, and let your pharmacist or doctor know if you feel dizzy, unusually tired, or notice your heartbeat feels slow.
Mechanism: Sertraline is a CYP2D6 inhibitor; metoprolol is a CYP2D6 substrate (active drug, not a prodrug). Inhibition reduces metoprolol clearance, increasing its exposure (AUC/Cmax) and pharmacodynamic effect.
Direction: Enhanced beta-blockade, potential bradycardia, hypotension, fatigue.
- Severity: Major on file
- Evidence: Theoretical
- Onset: Unspecified
Management: Monitor heart rate and blood pressure. Metoprolol dose may need downward titration during coadministration and upward adjustment if sertraline is discontinued. Individualize per patient response.
What happens
Increased CYP2D6 substrate exposure
Interaction Deep Dive
When sertraline, which inhibits CYP2D6, is taken alongside a CYP2D6 substrate, the substrate's exposure can rise. Should the two need to be given together, lower the CYP2D6 substrate dose as appropriate; on the other hand, stopping sertraline may call for raising the dosage of a CYP2D6 substrate1.
Why it happens (mechanism)
Inhibition of CYP2D6 substrate metabolism by sertraline
How to manage this interaction
This is manageable. Keep taking both medicines exactly as prescribed unless your prescriber tells you otherwise.
- Your care team may monitor your heart rate and blood pressure more closely.
- Your metoprolol dose may need to be adjusted and individualized while you take both, and possibly adjusted again if sertraline is ever stopped.
- Tell your pharmacist or doctor if you feel dizzy, faint, unusually tired, or notice a slow heartbeat.
Do not start, stop, or change either medicine on your own. Bring this up at your next visit so your team can tailor your plan.
Management is individual — confirm any change with your pharmacist or prescriber.
Literature reports
1 report — tap to read
a) In studies examining drug interactions, PARoxetine produced the following effects on medications metabolized by CYP2D6. PARoxetine 20 mg once daily at steady-state raised the Cmax, AUC, and t(1/2) of a single 100 mg dose of desipramine by roughly 2-fold, 5-fold, and 3-fold, respectively. Among patients maintained on risperiDONE 4 to 8 mg/day, daily PARoxetine 20 mg increased mean risperiDONE plasma concentrations by 4-fold, lowered 9-hydroxyrisperiDONE concentrations by 10%, and raised concentrations of the active moiety by 1.4-fold. In healthy volunteers who were extensive CYP2D6 metabolizers, steady-state atomoxetine AUC values were 6- to 8-fold higher and Cmax values were 3- to 4-fold higher when PARoxetine was given concurrently compared with atomoxetine given alone. Mean steady-state digoxin AUC fell by 15% when PARoxetine was present. In a study using propranolol 80 mg twice daily for 18 days, the steady-state plasma concentrations of propranolol did not change during coadministration with PARoxetine 30 mg once daily over the final 10 days 2.
Common questions
Can I take Metoprolol and Sertraline together?
Sertraline can slow the breakdown of metoprolol, raising its levels and possibly strengthening its effects (slower heart rate, lower blood pressure). Keep taking both as prescribed and ask your care team about monitoring or dose adjustment. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Metoprolol 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 Metoprolol and Sertraline interaction managed?
This is manageable. Keep taking both medicines exactly as prescribed unless your prescriber tells you otherwise. Your care team may monitor your heart rate and blood pressure more closely. Your metoprolol dose may need to be adjusted and individualized while you take both, and possibly adjusted again if sertraline is ever stopped. Tell your pharmacist or doctor if you feel dizzy, faint, unusually… 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:
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- Converting Doses Of Lexapro (Escitalopram) To Zoloft (Sertraline)
- Does MCT Oil Interact With Amlodipine or Metoprolol?
- Is Hibiscus Tea Safe With Metoprolol, Losartan, and Aspirin?
- Concerns Taking Metoprolol With Saw Palmetto
Questions for your pharmacist
- Does my dose of Metoprolol 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 (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 Metoprolol
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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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