Buprenorphine and Sodium Oxybate: 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
Sodium Oxybate
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 use disorder, and sodium oxybate is a strong sleep medicine used for narcolepsy. When you take them together, their calming effects can add up. That can make you very drowsy, lower your blood pressure, and (most importantly) slow your breathing, which in serious cases can be dangerous.
Please don't stop or change either medicine on your own. Your care team can manage this by adjusting doses, spacing out treatment, and watching you more closely. They may also give you a naloxone rescue kit just to be safe. Talk with your pharmacist or doctor about the best plan for you.
Mechanism: additive CNS depression between an opioid partial agonist (buprenorphine) and the CNS depressant sodium oxybate. No prodrug or metabolic-activation issue applies; this is a pharmacodynamic interaction.
Risk: potentiated respiratory depression, obtundation, hypotension, profound sedation, syncope, and death.
- Severity: major; evidence: theoretical; onset: unspecified.
- Combination generally not recommended.
- If required, consider dose reduction or discontinuation of one or more CNS depressant (including the oxybate).
- For short-term/perioperative opioid need, consider interrupting oxybate therapy.
- Monitor mental status and respiratory function; strongly consider prescribing naloxone.
What happens
An increased risk of CNS depression and clinically significant respiratory depression, obtundation, hypotension, profound sedation, syncope, and death
Interaction Deep Dive
Taking sodium oxybate or mixed oxybate salts together with other CNS depressants raises the likelihood of additive CNS depression along with clinically meaningful respiratory depression, obtundation, hypotension, deep sedation, syncope, and death. If, nonetheless, these CNS depressants must be given alongside an oxybate, one should weigh lowering the dose of or stopping one or more of the CNS depressant(s), oxybates included. Furthermore, when an opioid is needed for a brief period (for example, in the post- or perioperative setting), pausing oxybate therapy should be considered234. Should combined use be unavoidable, watch for shifts in mental status and for respiratory depression, handle the situation with care, and give strong consideration to prescribing naloxone so that opioid overdose can be treated in an emergency1.
Why it happens (mechanism)
Additive CNS depression
How to manage this interaction
Keep taking both exactly as prescribed unless your prescriber tells you otherwise. This combination is generally avoided, but sometimes it is needed, and your care team can manage it safely.
- Your team may adjust or lower the dose of one or both medicines, individualized to you.
- If you need an opioid only for a short time (like after surgery), your team may pause the sodium oxybate.
- They may monitor you more closely for extreme drowsiness or slowed breathing.
- Ask about carrying a naloxone rescue kit.
Call your pharmacist or prescriber before making any changes, and get emergency help for very slow or shallow breathing.
Management is individual — confirm any change with your pharmacist or prescriber.
Common questions
Can I take Buprenorphine and Sodium Oxybate together?
Combining buprenorphine and sodium oxybate adds up their sedating effects and can dangerously slow breathing, so this pairing is usually avoided; if both are needed, your care team will adjust doses, monitor you closely, and may prescribe naloxone. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Buprenorphine and Sodium Oxybate 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 Sodium Oxybate interaction managed?
Keep taking both exactly as prescribed unless your prescriber tells you otherwise. This combination is generally avoided, but sometimes it is needed, and your care team can manage it safely. Your team may adjust or lower the dose of one or both medicines, individualized to you. If you need an opioid only for a short time (like after surgery), your team may pause the sodium oxybate. They may monito… 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.
Questions for your pharmacist
- Does my dose of Buprenorphine or Sodium Oxybate 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 (4)
- Product Information: SUBUTEX(R) sublingual tablets, buprenorphine sublingual tablets. Indivior Inc (per FDA), North Chesterfield, VA, 2021. DailyMed
- Product Information: XYWAV(R) oral solution, calcium, magnesium, potassium, sodium oxybates oral solution. Jazz Pharmaceuticals Inc (per manufacturer), Palo Alto, CA, 2023. DailyMed
- Product Information: XYREM(R) oral solution, sodium oxybate oral solution. Jazz Pharmaceuticals Inc (per manufacturer), Palo Alto, CA, 2023. DailyMed
- Product Information: LUMRYZ(TM) oral extended-release suspension, sodium oxybate extended-release suspension. Avadel CNS Phamaceuticals LLC (per FDA), Chesterfield, MO, 2024. DailyMed
Keep reading about Buprenorphine
Keep reading about Sodium Oxybate
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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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