Sertraline and Rifampin: 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
Rifampin
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.
Here's what's going on. Rifampin (Rifadin) speeds up the liver enzyme that breaks down your sertraline. When that enzyme works faster, your body clears the sertraline more quickly, so there's less of it working for you. Over time, that can mean your antidepressant doesn't feel as effective, and some people even notice symptoms like dizziness, mood changes, or a flu-like feeling if levels drop too fast.
The good news: this is manageable. Keep taking both medications as prescribed, and let your care team know you're on them together. They can watch how you're doing and adjust your sertraline dose if needed so you stay feeling your best.
Mechanism: Rifampin is a potent inducer of CYP3A4, which contributes to sertraline metabolism. Induction increases sertraline clearance, lowering plasma exposure (AUC/Cmax) and potentially reducing therapeutic effect.
Direction/effect: Reduced sertraline efficacy; a case report described SSRI discontinuation-like symptoms after 7 days of concurrent use.
- Onset: delayed (enzyme induction develops over days).
- Evidence: probable; largely single case report plus known induction pharmacology.
- Management: Monitor for loss of antidepressant response and SSRI withdrawal symptoms. Sertraline dose may need to be increased and individualized during rifampin therapy, with reassessment when rifampin is stopped.
What happens
Loss of sertraline efficacy
Interaction Deep Dive
The cytochrome P450 3A4 enzyme system is responsible for sertraline metabolism, and rifampin therapy induces these enzymes. A case report described a patient in whom sertraline lost its effectiveness and selective serotonin reuptake inhibitor (SSRI) withdrawal syndrome was triggered after rifampin and sertraline had been given together for seven days1.
Why it happens (mechanism)
Induction of cytochrome P450 3A4-mediated sertraline metabolism
How to manage this interaction
What your care team may do:
- Keep an eye on how well your sertraline is working while you're on rifampin.
- Watch for signs of low sertraline levels, such as returning depression or anxiety, dizziness, irritability, or flu-like feelings.
- Adjust your sertraline dose if needed. The right dose is individualized by your team, and it may need review again once rifampin is finished.
What you should do: Keep taking both medications exactly as prescribed. Don't change doses on your own. Tell your pharmacist or prescriber if your mood symptoms come back or you feel off, so they can tailor your treatment.
Management is individual — confirm any change with your pharmacist or prescriber.
Literature reports
1 report — tap to read
a) It was suspected that rifampin brought on a selective serotonin reuptake inhibitor withdrawal syndrome and a loss of sertraline effectiveness in a 34-year-old male patient following seven days of combined treatment. The patient had been maintained on sertraline 200 mg each night for generalized anxiety disorder when rifampin 300 mg twice daily along with sulfamethoxazole/trimethoprim 800 mg/160 mg was initiated for a methicillin-resistant Staphylococcus aureus skin infection. After seven days, the patient reported considerable anxiety, excessive worrying, and a loss of energy. At that point, a blood sample was obtained to measure the plasma sertraline level. Laboratory testing showed a sertraline level of 18 ng/mL and an N-desmethylsertraline level of 62 ng/mL. The patient completed the rest of the 10-day rifampin course. Seven days after finishing rifampin, a further blood sample showed a sertraline level of 55 ng/mL and an N-desmethylsertraline level of 136 ng/mL. Anxiety continued to persist in this patient, so sertraline was tapered off and he was successfully managed with paroxetine and clonazepam 1.
Common questions
Can I take Sertraline and Rifampin together?
Rifampin can lower sertraline levels and make your antidepressant less effective over time, but your care team can manage this by monitoring you and adjusting your sertraline dose if needed. Keep taking both as prescribed and report any return of symptoms. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Sertraline and Rifampin interaction?
It is rated moderate. Can be significant — usually manageable with monitoring.
How quickly could this interaction happen?
The documented onset is "delayed". Effects tend to build up gradually over days to weeks.
How is the Sertraline and Rifampin interaction managed?
What your care team may do: Keep an eye on how well your sertraline is working while you're on rifampin. Watch for signs of low sertraline levels, such as returning depression or anxiety, dizziness, irritability, or flu-like feelings. Adjust your sertraline dose if needed. The right dose is individualized by your team, and it may need review again once rifampin is finished. What you should do: Kee… 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 Rifampin 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 anything you'd monitor while I'm on both?
References (1)
- Markowitz JS & DeVane CL: Rifampin-induced selective serotonin reuptake inhibitor withdrawal syndrome in a patient treated with sertraline (letter). J Clin Psychopharmacol 2000; 20:109-110. PubMed
Keep reading about Rifampin
Keep reading about Sertraline
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