Opipramol 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
Opipramol
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.
Both buprenorphine (a pain and opioid-dependence medicine) and opipramol can raise serotonin, a natural brain chemical. When two medicines do this together, there's a small chance serotonin can build up too much, causing a reaction called serotonin syndrome. Signs can include feeling agitated or confused, a fast heartbeat, sweating, shivering, muscle twitching or stiffness, and shaking.
Please know this is considered a possible risk, not something that happens to everyone. The good news is your care team can manage it easily by keeping an eye on how you feel, especially when you first start or change a dose. If you notice those symptoms, reach out to your pharmacist or doctor promptly.
Interaction: Additive serotonergic effects from buprenorphine plus opipramol, giving a theoretical increased risk of serotonin syndrome.
- Direction/mechanism: Pharmacodynamic (additive) serotonergic activity; not a CYP-based PK interaction. Neither agent is treated as a prodrug here.
- Severity/evidence: Rated major, but substantiation is theoretical. Onset unspecified.
- Management: Use concomitantly with caution. Monitor for serotonin syndrome (autonomic instability, neuromuscular hyperactivity, altered mental status), particularly at initiation and with dose changes. Discontinue buprenorphine if serotonin syndrome is suspected.
What happens
An increased risk of serotonin syndrome
Interaction Deep Dive
Because serotonin syndrome may develop, take care when buprenorphine is given alongside other drugs that act on the serotonergic neurotransmitter system. Should combined use be necessary, watch for signs of serotonin syndrome, especially when starting therapy and when doses are changed21. If serotonin syndrome is suspected, stop buprenorphine1.
Why it happens (mechanism)
Additive serotonergic effects
How to manage this interaction
If both medicines are prescribed together, it's usually because your care team has decided the benefit is worth it. Keep taking both as prescribed unless told otherwise.
- Your team may monitor you more closely, especially when you start either drug or when a dose is changed.
- Watch for signs of serotonin syndrome: agitation, confusion, rapid heartbeat, high fever, heavy sweating, shivering, muscle twitching or stiffness, or tremor.
- If these symptoms appear, contact your prescriber or pharmacist right away, or seek urgent care if severe.
Do not stop or adjust either medicine on your own; let your care team guide any changes.
Management is individual — confirm any change with your pharmacist or prescriber.
Common questions
Can I take Opipramol and Buprenorphine together?
Taking buprenorphine with opipramol may add up serotonin activity and, in theory, raise the risk of serotonin syndrome; keep taking both as prescribed and tell your care team promptly if you notice agitation, rapid heartbeat, sweating, shivering, or muscle twitching. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Opipramol 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 Opipramol and Buprenorphine interaction managed?
If both medicines are prescribed together, it's usually because your care team has decided the benefit is worth it. Keep taking both as prescribed unless told otherwise. Your team may monitor you more closely, especially when you start either drug or when a dose is changed. Watch for signs of serotonin syndrome: agitation, confusion, rapid heartbeat, high fever, heavy sweating, shivering, muscle t… 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 Opipramol 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 (2)
- Product Information: BRIXADI(TM) subcutaneous extended-release injection, buprenorphine subcutaneous extended-release injection. Braeburn Inc (per FDA), Plymouth Meeting, PA, 2023. DailyMed
- Product Information: PROBUPHINE(R) subdermal implant, buprenorphine subdermal implant. Braeburn Pharmaceuticals Inc (per FDA), Princeton, NJ, 2016.
Keep reading about Buprenorphine
Keep reading about Opipramol
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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