Sertraline and Apalutamide: 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
Apalutamide
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. Apalutamide (Erleada) is a strong "enzyme booster." It speeds up a liver enzyme called CYP3A4, which is one of the pathways your body uses to break down sertraline. When that pathway runs faster, sertraline can get cleared out of your body more quickly. That means there may be less sertraline working for you, and your depression or anxiety symptoms could creep back.
The good news is this is very manageable. Please don't change anything on your own. Your care team can watch how you're feeling, adjust your dose if needed, or pick a different antidepressant that isn't affected. Just keep taking both as prescribed and mention any return of symptoms.
Effect: Reduced exposure of the CYP3A4 substrate (sertraline) via apalutamide-mediated CYP3A4 induction. Neither drug is a prodrug, so faster metabolism means lower sertraline plasma levels and potential loss of antidepressant efficacy.
- Direction: Decreased sertraline exposure (AUC/Cmax), risk of therapeutic failure.
- Onset: Unspecified; enzyme induction typically develops over 1 to 2 weeks and persists during therapy.
- Evidence: Probable; apalutamide is a potent CYP3A4 inducer (midazolam data support).
- Management: Consider an antidepressant less dependent on CYP3A4. If continued, monitor for loss of efficacy and titrate dose per clinical response.
What happens
Reduced CYP3A4 substrate exposure
Interaction Deep Dive
Taking apalutamide alongside CYP3A4 substrates can lower the exposure of those substrates. In clinical studies, giving apalutamide together with midazolam (a CYP3A4 substrate) led to reduced apalutamide exposure. During apalutamide treatment, it is advised to replace any drug that relies mainly on CYP3A4 for its metabolism. When coadministration cannot be avoided, monitor the patient for diminished substrate activity1.
Why it happens (mechanism)
Induction of CYP3A4-mediated metabolism by apalutamide
How to manage this interaction
The key point: apalutamide can lower how much sertraline is active in your body, so your antidepressant may work less well.
What your care team may do:
- Consider switching to an antidepressant that apalutamide affects less.
- If you stay on both, watch closely for a return of depression or anxiety symptoms.
- Adjust your sertraline dose as needed, individualized to how you respond.
What you can do: keep taking both exactly as prescribed, and tell your pharmacist or prescriber if your mood, sleep, energy, or anxiety symptoms return. Don't stop or change doses on your own.
Management is individual — confirm any change with your pharmacist or prescriber.
Literature reports
1 report — tap to read
a) Giving a single dose of apalutamide together with midazolam, a CYP3A4 substrate, produced a 92% reduction in the AUC of midazolam 1.
Common questions
Can I take Sertraline and Apalutamide together?
Apalutamide speeds up the breakdown of sertraline, which can weaken its effect, so watch for returning depression or anxiety symptoms and let your care team adjust the dose or choose an alternative. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Sertraline and Apalutamide 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 Apalutamide interaction managed?
The key point: apalutamide can lower how much sertraline is active in your body, so your antidepressant may work less well. What your care team may do: Consider switching to an antidepressant that apalutamide affects less. If you stay on both, watch closely for a return of depression or anxiety symptoms. Adjust your sertraline dose as needed, individualized to how you respond. What you can 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 Apalutamide 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 (1)
- Product Information: ERLEADA(R) oral tablets, apalutamide oral tablets. Janssen Products LP (per FDA), Horsham, PA, 2024. DailyMed
Keep reading about Apalutamide
Keep reading about Sertraline
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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:
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