Diazoxide and Buprenorphine: 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
Diazoxide
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.
You've been prescribed buprenorphine (an opioid pain or dependence medicine) along with diazoxide, which is sometimes used to help with water and blood pressure balance. Opioids like buprenorphine can cause your body to hold onto a little more water by triggering a hormone that reduces urine output. In theory, this could make a water pill (diuretic) effect work less well than expected.
Please know this is based mostly on theory, not strong real-world reports, so try not to worry. Keep taking both exactly as prescribed. Your care team can easily watch for changes in your swelling, urination, or blood pressure and adjust things if needed. If you notice more swelling or your blood pressure creeping up, let your pharmacist or doctor know.
Effect: Opioids such as buprenorphine may reduce diuretic efficacy via induction of antidiuretic hormone (ADH) release, promoting water retention and potentially diminishing diuresis and blood-pressure control.
- Direction: Reduced pharmacodynamic effect of the diuretic (neither agent is metabolically inhibited/induced here; mechanism is PD, not PK).
- Evidence: Theoretical; onset unspecified; severity rated major.
- Monitoring: Assess urine output, edema, weight, and blood pressure.
- Management: Titrate the diuretic dose as needed based on clinical response; individualize.
What happens
Reduced efficacy of diuretics
Interaction Deep Dive
When opioids such as buprenorphine are given together with diuretics, the diuretic's effectiveness may be lessened because the opioid can trigger the release of antidiuretic hormone. Watch patients for indications of reduced diuresis and/or changes in blood pressure, and raise the diuretic dose when necessary1.
Why it happens (mechanism)
Induction of antidiuretic hormone release
How to manage this interaction
The concern here is that buprenorphine may blunt how well a diuretic works by promoting water retention. This is a theoretical concern, and it is manageable.
- Keep taking both medications as prescribed unless your prescriber tells you otherwise.
- Your care team may monitor you more closely for reduced urination, new or worsening swelling, weight gain, or changes in blood pressure.
- The diuretic dose may need to be adjusted and individualized by your team if its effect seems reduced.
- Tell your pharmacist or doctor if you notice more swelling, sudden weight gain, or blood pressure changes.
Management is individual — confirm any change with your pharmacist or prescriber.
Common questions
Can I take Diazoxide and Buprenorphine together?
Buprenorphine may theoretically reduce how well a diuretic works by causing water retention, so watch for swelling or blood pressure changes and your team can adjust the diuretic dose if needed. Keep taking both as prescribed. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Diazoxide and Buprenorphine 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 Diazoxide and Buprenorphine interaction managed?
The concern here is that buprenorphine may blunt how well a diuretic works by promoting water retention. This is a theoretical concern, and it is manageable. Keep taking both medications as prescribed unless your prescriber tells you otherwise. Your care team may monitor you more closely for reduced urination, new or worsening swelling, weight gain, or changes in blood pressure. The diuretic dose… 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 Diazoxide or Buprenorphine 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: BRIXADI(TM) subcutaneous extended-release injection, buprenorphine subcutaneous extended-release injection. Braeburn Inc (per FDA), Plymouth Meeting, PA, 2023. DailyMed
Keep reading about Buprenorphine
Keep reading about Diazoxide
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