Ubrogepant and Trospium / Xanomeline: 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
Ubrogepant
Trospium / Xanomeline
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's going on: Cobenfy contains xanomeline, which can briefly slow down an enzyme in your gut called CYP3A4. That's the same enzyme your body uses to break down ubrogepant (Ubrelvy), your migraine medicine. When that enzyme is slowed, a bit more ubrogepant can be absorbed than usual.
In plain terms, taking both together may raise the amount of ubrogepant in your system, which could make side effects like nausea, sleepiness, or dry mouth a little more likely or stronger. The good news is this is a manageable situation. Keep taking both as prescribed, and let your pharmacist or doctor know so they can watch how you feel and adjust things if needed.
Mechanism: Xanomeline (in Cobenfy) transiently inhibits intestinal (gut wall) CYP3A4 without meaningful systemic inhibition. Ubrogepant is a sensitive oral CYP3A4 substrate (and not a prodrug), so co-administration may increase ubrogepant AUC/Cmax.
Direction: Increased ubrogepant exposure, potentially raising frequency/severity of dose-related adverse effects (nausea, somnolence).
- Evidence: theoretical
- Onset: unspecified
- Severity: moderate
- Management: Monitor for increased ubrogepant-related adverse reactions. Ubrogepant dosing may be individualized by the care team per product labeling for CYP3A4 inhibitors if clinically warranted.
What happens
Increased oral sensitive CYP3A4 substrate exposure and an increased risk on severity and frequency of sensitive CYP3A4 substrate-related adverse reactions
Interaction Deep Dive
In the gut, xanomeline produces a temporary, local inhibition of CYP3A4, though it does not do so systemically. When xanomeline is taken together with oral medications that are sensitive CYP3A4 substrates, the exposure to those oral sensitive CYP3A4 substrates may rise. As a result, the frequency and/or severity of adverse reactions caused by these substrates may increase. During concurrent administration, patients should be monitored for any increase in the frequency and/or severity of adverse reactions associated with oral drugs that are sensitive CYP3A4 substrates1.
Why it happens (mechanism)
Inhibition of CYP3A4-substrate metabolism by xanomeline
How to manage this interaction
What your care team may do:
- Keep both medications as prescribed unless told otherwise.
- Watch you more closely for stronger or more frequent ubrogepant side effects (such as nausea or drowsiness).
- Adjust and individualize your ubrogepant dose if needed based on how you respond.
What you can do: Report any new or worsening side effects to your pharmacist or prescriber. Because this concern is based on theory rather than strong real-world data, no change may be needed, but it's worth mentioning so your team can tailor and monitor your treatment.
Management is individual — confirm any change with your pharmacist or prescriber.
Common questions
Can I take Ubrogepant and Trospium / Xanomeline together?
Taking Cobenfy (xanomeline) with ubrogepant (Ubrelvy) may raise ubrogepant levels a bit and make its side effects more likely, so keep taking both as prescribed and tell your pharmacist or doctor so they can monitor you and adjust the dose if needed. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Ubrogepant and Trospium / Xanomeline interaction?
It is rated moderate. Can be significant — usually manageable with monitoring.
How quickly could this interaction happen?
The documented onset is "unspecified". The timing of this interaction is not well characterized.
How is the Ubrogepant and Trospium / Xanomeline interaction managed?
What your care team may do: Keep both medications as prescribed unless told otherwise. Watch you more closely for stronger or more frequent ubrogepant side effects (such as nausea or drowsiness). Adjust and individualize your ubrogepant dose if needed based on how you respond. What you can do: Report any new or worsening side effects to your pharmacist or prescriber. Because this concern is based… 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 Ubrogepant or Trospium / Xanomeline 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 anything you'd monitor while I'm on both?
References (1)
- Citation #1
Keep reading about Ubrogepant
Keep reading about Trospium / Xanomeline
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.
Check another combination
Our instant two-drug interaction checker is almost here.
Still have questions about this combination?
Every question gets a real answer from a licensed pharmacist — free, and usually within a day.
Ask the pharmacist