Nafcillin Injection and Rimegepant: Interaction Details
AI-assisted, pharmacist-reviewed · Source data updated Aug 8, 2026 · Sources: FDA labeling, DDInter 2.0, cited literature
Rimegepant
Nafcillin Injection
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.
What happens
Decreased exposure of rimegepant
Interaction Deep Dive
Concomitant use of rimegepant (a moderately sensitive CYP3A4 substrate) with moderate inducers of CYP3A4 may result in a significant decrease in rimegepant exposure, which may lead to loss of efficacy and should be avoided1.
Why it happens (mechanism)
Induction of CYP3A4-mediated rimegepant metabolism
Common questions
Can I take Nafcillin Injection and Rimegepant together?
Decreased exposure of rimegepant Always confirm with your pharmacist or prescriber before making any change.
How serious is the Nafcillin Injection and Rimegepant 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 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 Nafcillin Injection or Rimegepant 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: NURTEC(TM) orally disintegrating tablets, rimegepant orally disintegrating tablets. Biohaven Pharmaceuticals Inc (per FDA), New Haven, CT, 2020.
Keep reading about Rimegepant
Keep reading about Nafcillin Injection
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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