Sertraline and Darunavir: 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
Darunavir
No brand names on recordSertraline
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.
Darunavir is an HIV medicine, and sertraline (an antidepressant) is broken down in your body partly by an enzyme that darunavir can slow down. When that enzyme is slowed, more sertraline can build up in your blood. That could make sertraline's effects and side effects stronger, like nausea, jitteriness, trouble sleeping, or feeling very restless.
The good news is this concern is mostly theoretical, and your care team can manage it easily. They may start sertraline at a lower dose and watch how you respond. Please keep taking both medicines as prescribed, and let your pharmacist or doctor know if you feel more side effects.
Mechanism: Darunavir (a CYP3A4 inhibitor, typically ritonavir/cobicistat-boosted) may inhibit CYP3A4-mediated metabolism of sertraline, increasing SSRI exposure (AUC/Cmax) and prolonging effect. Neither drug is a prodrug here, so the direction is increased sertraline effect.
- Direction: Increased SSRI exposure and adverse-reaction risk (GI upset, insomnia, tremor, and rarely serotonin toxicity).
- Onset: Unspecified.
- Evidence: Theoretical.
- Management: Titrate sertraline carefully to effect, use the lowest feasible starting/maintenance dose, and monitor antidepressant response and tolerability. Dose should be individualized by the care team.
What happens
Increased selective serotonin reuptake inhibitor (SSRI) exposure and an increased risk of SSRI-related adverse reactions
Interaction Deep Dive
When darunavir is given together with a serotonin reuptake inhibitor (SSRI) that is also a CYP3A4 substrate, exposure to the SSRI may rise, potentially intensifying or extending its therapeutic action and possibly leading to adverse events. Should the two be used concurrently, it is advised to titrate the antidepressant dose carefully toward the intended effect, which includes starting from or maintaining the lowest practical dose, while also watching for the antidepressant response12.
Why it happens (mechanism)
Inhibition of CYP3A4-substrate metabolism by darunavir
How to manage this interaction
This interaction is usually easy for your care team to handle. Because darunavir can raise sertraline levels, the typical approach is:
- Start low: Your prescriber may begin sertraline at the lowest feasible dose and adjust upward slowly to the effect you need.
- Monitor: Your team may watch your antidepressant response and check for side effects like nausea, restlessness, or sleep changes.
- Individualize: Your sertraline dose may be adjusted and tailored by your care team.
Keep taking both medicines as prescribed. Tell your pharmacist or doctor if you notice new or stronger side effects, and don't stop or change either drug on your own.
Management is individual — confirm any change with your pharmacist or prescriber.
Common questions
Can I take Sertraline and Darunavir together?
Darunavir can raise sertraline levels, so your care team may start sertraline low and monitor you. Keep taking both as prescribed and report any new side effects. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Sertraline and Darunavir 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 Darunavir interaction managed?
This interaction is usually easy for your care team to handle. Because darunavir can raise sertraline levels, the typical approach is: Start low: Your prescriber may begin sertraline at the lowest feasible dose and adjust upward slowly to the effect you need. Monitor: Your team may watch your antidepressant response and check for side effects like nausea, restlessness, or sleep changes. Individual… 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 Sertraline or Darunavir 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: PREZCOBIX® PED oral tablets for suspension, darunavir cobicistat oral tablets for suspension. Janssen Products, LP (per FDA), Horsham, PA, 2026. DailyMed
- Product Information: PREZCOBIX® oral tablets, darunavir cobicistat oral tablets. Janssen Products, LP (per FDA), Horsham, PA, 2026. DailyMed
Keep reading about Darunavir
Keep reading about Sertraline
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