Sertraline and Oxcarbazepine: 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
Oxcarbazepine
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 oxcarbazepine (Trileptal or Oxtellar) and sertraline together. Here's what to know: oxcarbazepine can slow down how your body breaks down sertraline, so more sertraline can build up in your system. Sertraline raises serotonin, a brain chemical, and higher levels can sometimes cause a reaction called serotonin syndrome.
Warning signs include a fast heartbeat, feeling very hot or sweaty, muscle twitching or jerking, shakiness, restlessness, or feeling confused. This can come on quickly, so it's good to be aware. The good news is your care team can manage this by watching you closely and adjusting things if needed. Keep taking both as prescribed and call your doctor or pharmacist if you notice these symptoms.
Effect: Increased risk of serotonin syndrome when oxcarbazepine is added to sertraline.
Mechanism: Oxcarbazepine may inhibit CYP2C19-mediated metabolism of sertraline (a CYP2C19 substrate), increasing sertraline exposure and serotonergic activity. Neither is a prodrug in this pathway, so inhibition raises the active drug and its effect.
- Direction: Increased sertraline effect / serotonergic burden
- Onset: Rapid (case report at ~24 hours)
- Evidence: Probable
- Severity: Major
Management: Use cautiously and monitor for tachycardia, hyperthermia, myoclonus, hyperreflexia, incoordination, and mental status changes. Doses may need individualization by the care team.
What happens
An increased risk of serotonin syndrome
Interaction Deep Dive
Taking oxcarbazepine, which inhibits CYP2C192, together with sertraline, a substrate of CYP2C193, can lead to the emergence of manifestations consistent with serotonin syndrome. A case report describes an 87-year-old man in whom serotonin syndrome symptoms appeared 24 hours after the two drugs were given together1. Exercise caution when these agents are combined, and observe the patient for indicators of serotonin syndrome, including tachycardia, hyperthermia, myoclonus, and changes in mental status.
Why it happens (mechanism)
Inhibition of CYP2C19-mediated metabolism of sertraline by oxcarbazepine
How to manage this interaction
If your care team decides you should take both, they can manage this safely.
- Keep taking both as prescribed unless your prescriber tells you otherwise.
- Your team may monitor you more closely, especially in the first day or two after starting the combination.
- Your sertraline dose may need to be adjusted and individualized by your care team.
- Watch for and report right away: restlessness, fast heartbeat, fever or feeling very hot, muscle twitching or jerking, overactive reflexes, or trouble with coordination.
Bring up any new or unusual symptoms with your pharmacist or prescriber promptly.
Management is individual — confirm any change with your pharmacist or prescriber.
Literature reports
1 report — tap to read
a) An 87-year-old man experienced symptoms of serotonin syndrome after receiving oxcarbazepine and sertraline together. He was admitted to the hospital for suspected cellulitis, having had swelling and redness of both lower extremities for 8 days. Before admission, his medications included sertraline 50 mg daily. He was begun on levofloxacin 500 mg daily to treat the cellulitis. After 5 days of therapy, he continued to have leg pain and burning, and oxcarbazepine 150 mg a day was initiated for neuropathy. The next day he developed vomiting, fever, hypertension, lethargy, mild stiffness, and upper body tremor. He was intubated and placed on IV fentanyl and midazolam. His body temperature reached 109 degrees F and his mean arterial pressure was 30 mmHg. He developed leukocytosis (WBC 22.4 x 10(4), up from 9.3 at admission) and an elevated creatinine kinase (592 units/L). Sedation was stopped and cooling blankets were used. The patient developed septic shock and kept worsening despite treatment with aggressive hydration, vasopressors, hydrocortisone, amikacin, metronidazole, ciprofloxacin, and linezolid. Brain stem reflexes were found to be absent within 30 hours of intubation. He was extubated and died 1.
Common questions
Can I take Sertraline and Oxcarbazepine together?
Taking oxcarbazepine with sertraline can raise sertraline levels and increase the risk of serotonin syndrome, which can start quickly. Keep taking both as prescribed, watch for symptoms like fast heartbeat, fever, muscle twitching, or confusion, and report them to your care team right away. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Sertraline and Oxcarbazepine interaction?
It is rated major. Potentially serious — often needs a change or close monitoring.
How quickly could this interaction happen?
The documented onset is "rapid". Effects can appear quickly, often within about 24 hours of combining the drugs.
How is the Sertraline and Oxcarbazepine interaction managed?
If your care team decides you should take both, they can manage this safely. Keep taking both as prescribed unless your prescriber tells you otherwise. Your team may monitor you more closely, especially in the first day or two after starting the combination. Your sertraline dose may need to be adjusted and individualized by your care team. Watch for and report right away: restlessness, fast heartb… 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 Oxcarbazepine 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 (3)
- Dardis C, Omoregie E, & Ly V: Fatal serotonin syndrome precipitated by oxcarbazepine in a patient using an selective serotonin reuptake inhibitor. Neurologist 2012; 18(4):204-205. PubMed
- Product Information: Trileptal(R) oral tablets, oral suspension, oxcarbazepine oral tablets, oral suspension. Novartis Pharmaceuticals Corporation (per FDA), East Hanover, NJ, 2013. DailyMed
- Obach RS, Cox LM, & Tremaine LM: Sertraline is metabolized by multiple cytochrome P450 enzymes, monoamine oxidases, and glucuronyl transferases in human: an in vitro study. Drug Metab Dispos 2005; 33(2):262-270. PubMed
Keep reading about Oxcarbazepine
Keep reading about Sertraline
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