Buprenorphine and Fingolimod: 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
Fingolimod
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 addiction medicine) and fingolimod (a multiple sclerosis medicine) can each affect your heart's electrical rhythm in a way doctors call QT prolongation. When two medicines that do this are used together, the effect can add up, which in rare cases can lead to an irregular heartbeat.
The good news is that this concern is theoretical, meaning it is based on how the drugs work rather than a proven problem in people taking both. Please keep taking both exactly as prescribed, and let your care team know you use them. They can check your heart rhythm and keep an eye on things like your potassium and magnesium levels to keep you safe.
Effect: Additive risk of QT interval prolongation with concurrent buprenorphine and fingolimod. Both agents are independently associated with QTc prolongation (this is a pharmacodynamic, not metabolic, interaction; neither drug's clearance is altered here).
- Direction: Additive QT effect, increasing torsades de pointes risk.
- Onset: Unspecified.
- Evidence: Theoretical; combined risk not quantified.
- Severity: Major.
- Management: Manufacturer advises avoiding concomitant use where feasible. If co-administered, obtain baseline and follow-up ECGs, correct electrolytes (K+, Mg2+), and heighten caution with bradycardia, HF, digoxin therapy, baseline QT prolongation, or congenital long-QT syndrome.
What happens
An increased risk of QT interval prolongation
Interaction Deep Dive
Buprenorphine should not be used together with agents that can lengthen the QT interval342. It remains unknown what risk results from pairing buprenorphine with other QT prolonging medications. When prescribing buprenorphine, take these findings into account for clinical decisions in patients who have risk factors including hypokalemia, bradycardia, recent conversion from atrial fibrillation, congestive heart failure, digitalis therapy, baseline QT prolongation, subclinical long-QT syndrome, or severe hypomagnesemia1.
Why it happens (mechanism)
Additive QT interval prolongation
How to manage this interaction
Your care team may take a few simple steps to use these two medicines together safely:
- They may check your heart rhythm with an ECG before and during treatment.
- They may monitor your potassium and magnesium levels, since low levels raise QT risk.
- They may take extra care if you have a slow heart rate, heart failure, or a known heart-rhythm condition.
- In some cases they may choose an alternative medicine.
Keep taking both as prescribed and do not stop on your own. Tell your pharmacist or prescriber that you take both, and mention any dizziness, fainting, or palpitations.
Management is individual — confirm any change with your pharmacist or prescriber.
Common questions
Can I take Buprenorphine and Fingolimod together?
Buprenorphine and fingolimod can each prolong the QT interval, so together they may add up and raise the risk of an irregular heartbeat. Keep taking both as prescribed and let your care team monitor your heart rhythm and electrolytes. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Buprenorphine and Fingolimod 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 Fingolimod interaction managed?
Your care team may take a few simple steps to use these two medicines together safely: They may check your heart rhythm with an ECG before and during treatment. They may monitor your potassium and magnesium levels, since low levels raise QT risk. They may take extra care if you have a slow heart rate, heart failure, or a known heart-rhythm condition. In some cases they may choose an alternative me… 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 Fingolimod 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: BRIXADI(TM) subcutaneous extended-release injection, buprenorphine subcutaneous extended-release injection. Braeburn Inc (per FDA), Plymouth Meeting, PA, 2023. DailyMed
- Product Information: BUTRANS(R) transdermal system patch, buprenorphine transdermal system patch. Purdue Pharma L.P. (per FDA), Stamford, CT, 2016. DailyMed
- Product Information: BELBUCA(TM) buccal film, buprenorphine buccal film. Endo Pharmaceuticals Inc. (per FDA), Malvern, PA, 2016.
- Product Information: BUPRENEX(R) intravenous injection, intramuscular injection, buprenorphine HCl intravenous injection, intramuscular injection. Indivior Inc. (per DailyMed), Richmond, VA, 2016. DailyMed
Keep reading about Buprenorphine
Keep reading about Fingolimod
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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