Buprenorphine and Modafinil: 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
Modafinil
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.
Here's what's going on. Modafinil (Provigil) can speed up the liver enzyme (called CYP3A4) that breaks down your buprenorphine. When that enzyme works faster, more of your buprenorphine gets cleared out, so the level in your blood can drop.
For you, that means your buprenorphine may not work as well as usual. If you take it for pain, the pain relief might fade. If you take it for opioid use disorder, you could start to feel withdrawal symptoms like restlessness, sweating, chills, or an upset stomach. The good news is that your care team can manage this by adjusting your dose and watching how you feel. Please talk with your pharmacist or doctor before changing anything.
Mechanism: Modafinil is a CYP3A4 inducer; buprenorphine is a CYP3A4 substrate. Induction increases buprenorphine metabolism, lowering plasma concentrations and AUC, which reduces efficacy and may precipitate opioid withdrawal.
- Direction: Reduced buprenorphine exposure and effect.
- Evidence/severity: Probable mechanism; rated major.
- Management: If modafinil is added, may need to increase buprenorphine to stable effect and monitor for withdrawal. On modafinil discontinuation, consider dose reduction and monitor for respiratory depression. Long-acting/subQ formulations offer less flexibility, so consider a formulation allowing precise titration if needed.
What happens
Reduced buprenorphine exposure and reduced efficacy of buprenorphine
Interaction Deep Dive
Taking buprenorphine together with a CYP3A4 inducer can precipitate opioid withdrawal symptoms, because buprenorphine plasma concentrations decline. When a patient on buprenorphine must also receive a CYP3A4 inducer, one option is to raise the buprenorphine dose until stable drug effects are reached, while watching for withdrawal. Conversely, if a CYP3A4 inducer is stopped in someone taking buprenorphine, consider lowering the buprenorphine dose and monitor for respiratory depression2. Should dose adjustment prove impossible once the CYP3A4 inducer is absent, switch the patient back to a buprenorphine formulation that allows finer dose control. For patients being transitioned from transmucosal buprenorphine given alongside CYP3A4 inducers, confirm through monitoring that the plasma buprenorphine level delivered by subQ buprenorphine is sufficient. For those already receiving subQ buprenorphine who then need a CYP3A4 inducer, monitor for withdrawal. If the buprenorphine dose is insufficient while the concomitant drug is present, and that drug cannot be reduced or stopped, modify the buprenorphine dose. When the available doses cannot deliver the target dose, use a buprenorphine formulation that permits more precise dose adjustments1.
Why it happens (mechanism)
Induction of CYP3A4-mediated metabolism of buprenorphine
How to manage this interaction
Keep taking both medications as prescribed unless your prescriber tells you otherwise. Your care team can manage this combination.
- Your buprenorphine dose may need to be adjusted and individualized by your team while you are on modafinil, and your team may monitor you more closely for withdrawal signs (restlessness, sweating, chills, nausea, cravings).
- If modafinil is later stopped, your team may lower the buprenorphine dose and watch for signs of too much opioid effect (excessive drowsiness, slow breathing).
- Tell your pharmacist or prescriber if you notice returning pain, withdrawal symptoms, or that your medication feels less effective.
Management is individual — confirm any change with your pharmacist or prescriber.
Literature reports
1 report — tap to read
a) The influence of a concurrently administered CYP3A4 inducer on buprenorphine exposure in patients receiving subQ buprenorphine has not been investigated; nevertheless, interactions of this kind have been demonstrated in studies employing transmucosal buprenorphine. The effects of buprenorphine may vary according to the route of administration 1.
Common questions
Can I take Buprenorphine and Modafinil together?
Modafinil can lower buprenorphine levels and reduce its effect, possibly causing withdrawal or reduced pain control; keep taking both as prescribed and ask your care team to adjust the dose and monitor you. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Buprenorphine and Modafinil 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 Modafinil interaction managed?
Keep taking both medications as prescribed unless your prescriber tells you otherwise. Your care team can manage this combination. Your buprenorphine dose may need to be adjusted and individualized by your team while you are on modafinil, and your team may monitor you more closely for withdrawal signs (restlessness, sweating, chills, nausea, cravings). If modafinil is later stopped, your team may… Management is individual — always follow your own care team's guidance.
How strong is the evidence for this interaction?
The evidence is graded "probable". Good supporting evidence, though not definitively proven.
Questions for your pharmacist
- Does my dose of Buprenorphine or Modafinil 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: ZUBSOLV(R) sublingual tablets, buprenorphine naloxone sublingual tablets. Orexo US Inc (per FDA), Morristown, NJ, 2023. DailyMed
Keep reading about Buprenorphine
Keep reading about Modafinil
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