Buprenorphine and Zuranolone: 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
Buprenorphine
Zuranolone
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.
Both of these medicines slow down your brain and body. Buprenorphine is an opioid used for pain or opioid dependence, and zuranolone (Zurzuvae) is used for postpartum depression. When you take them together, their calming effects can add up.
That means you may feel extra sleepy, dizzy, foggy, or slowed down, and in some cases your breathing could become too shallow. Please don't stop or change either medicine on your own. The good news is your care team can manage this by adjusting your dose and watching you more closely. Reach out to your pharmacist or doctor if you feel unusually drowsy or hard to wake.
Additive CNS depression between buprenorphine (opioid partial agonist) and zuranolone (neuroactive steroid, GABA-A positive allosteric modulator). This is a pharmacodynamic interaction, not a metabolic one; neither is a prodrug relevant here.
- Direction/effect: increased sedation, psychomotor impairment, and risk of respiratory depression.
- Severity: major. Evidence: probable. Onset: unspecified.
- Management: if co-use is unavoidable, consider dose reduction of one or both agents, individualize dosing, and exercise caution. Monitor for excess sedation and respiratory status; counsel on avoiding driving/hazardous tasks until effects are known.
What happens
An increased risk of CNS depression
Interaction Deep Dive
When zuranolone is taken together with CNS depressants, additive pharmacological effects may heighten the likelihood of psychomotor performance impairment or CNS depressant effects. Should such combined use be unavoidable, caution should be exercised and a dosage reduction considered1.
Why it happens (mechanism)
Additive CNS depression
How to manage this interaction
The main thing your care team watches for is added drowsiness and slowed breathing. Keep taking both medicines exactly as prescribed unless your doctor tells you otherwise.
- Your team may reduce the dose of one or both medicines, tailored to you.
- They may monitor you more closely for sedation, especially early on.
- Avoid driving or operating machinery until you know how the combination affects you.
- Avoid alcohol or other sedatives that could add to the effect.
Tell your pharmacist or prescriber right away if you feel very sleepy, confused, dizzy, or if your breathing feels slow or shallow.
Management is individual — confirm any change with your pharmacist or prescriber.
Literature reports
4 reports — tap to read
a) Giving repeated 50 mg daily doses of zuranolone together with alprazolam resulted in reduced psychomotor performance 1.
b) In a drug interaction study, the geometric mean ratios of zuranolone with alprazolam versus without alprazolam were 0.92 for Cmax and 0.95 for AUC 1.
Ethanol
Grapefruit Juice
Common questions
Can I take Buprenorphine and Zuranolone together?
Taking buprenorphine and zuranolone together can add up to cause heavy drowsiness and slowed breathing. Keep both as prescribed, avoid driving until you know how you react, and tell your care team about any strong sedation so they can adjust doses and monitor you. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Buprenorphine and Zuranolone 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 Buprenorphine and Zuranolone interaction managed?
The main thing your care team watches for is added drowsiness and slowed breathing. Keep taking both medicines exactly as prescribed unless your doctor tells you otherwise. Your team may reduce the dose of one or both medicines, tailored to you. They may monitor you more closely for sedation, especially early on. Avoid driving or operating machinery until you know how the combination affects you.… 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.
Questions for your pharmacist
- Does my dose of Buprenorphine or Zuranolone 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: ZURZUVAE(TM) oral capsules, zuranolone oral capsules. Biogen Inc (per FDA), Cambridge, MA, 2023. DailyMed
Keep reading about Buprenorphine
Keep reading about Zuranolone
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.
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