Eletriptan 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
Eletriptan
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 eletriptan (Relpax, a migraine medicine) can raise levels of a brain chemical called serotonin. When two medicines do this together, there is a small chance of a reaction called serotonin syndrome.
Signs to watch for include agitation, shakiness, sweating, a fast heartbeat, muscle twitching, or feeling confused. This is considered a theoretical risk, meaning it is a caution based on how the drugs work rather than something seen often. The good news is your care team can manage this safely by watching you, especially when you first start or change a dose. Let your pharmacist or doctor know you take both.
Effect: Additive serotonergic activity may increase the risk of serotonin syndrome when buprenorphine and eletriptan (a 5-HT1B/1D agonist triptan) are used together.
- Mechanism: Additive serotonergic effects (pharmacodynamic). Neither agent's interaction here is metabolic; direction is toward increased serotonergic tone.
- Evidence: Theoretical; severity rated major.
- Onset: Unspecified; highest concern at initiation and dose changes.
- Management: Use with caution. Monitor for hyperthermia, autonomic instability, neuromuscular signs (clonus, hyperreflexia, tremor), and mental status changes. Discontinue buprenorphine if serotonin syndrome is suspected.
What happens
An increased risk of serotonin syndrome
Interaction Deep Dive
Because serotonin syndrome may occur, use buprenorphine cautiously alongside other drugs that influence the serotonergic neurotransmitter system. When such combined therapy cannot be avoided, watch for signs of serotonin syndrome, especially at the start of treatment and whenever doses are changed21. Should serotonin syndrome be suspected, stop buprenorphine1.
Why it happens (mechanism)
Additive serotonergic effects
How to manage this interaction
You can usually take both when needed, but your care team will keep an eye on things.
- Keep taking both as prescribed unless your prescriber tells you otherwise.
- Extra watchfulness is most important when you first start either drug or when a dose changes.
- Get urgent help if you notice agitation, confusion, fever, sweating, fast heartbeat, muscle twitching or stiffness, or shivering.
- Tell your pharmacist and prescriber about all serotonergic medicines you take (antidepressants, other triptans, tramadol) so they can tailor monitoring.
If serotonin syndrome is suspected, buprenorphine may be stopped under medical guidance.
Management is individual — confirm any change with your pharmacist or prescriber.
Common questions
Can I take Eletriptan and Buprenorphine together?
Taking buprenorphine with eletriptan carries a mostly theoretical risk of serotonin syndrome, so watch for symptoms like agitation, fever, sweating, or muscle twitching, especially when starting or changing doses, and report them right away. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Eletriptan 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 Eletriptan and Buprenorphine interaction managed?
You can usually take both when needed, but your care team will keep an eye on things. Keep taking both as prescribed unless your prescriber tells you otherwise. Extra watchfulness is most important when you first start either drug or when a dose changes. Get urgent help if you notice agitation, confusion, fever, sweating, fast heartbeat, muscle twitching or stiffness, or shivering. Tell your pharm… 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 Eletriptan 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 Eletriptan
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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:
major · moderate · minor — check everything you take with our drug–supplement interaction checker.
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