Drug interactions
Darifenacin + Midazolam intranasal
Severity: Moderate
Darifenacin and Midazolam intranasal: moderate interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Darifenacin is a weak CYP3A4 inhibitor and may modestly raise midazolam exposure. This could prolong or deepen sedation after intranasal midazolam.
What this interaction means in plain words
Darifenacin and Midazolam intranasal can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Why it happens
Weak inhibition of CYP3A4-mediated midazolam metabolism by darifenacin.
What to do
Monitor the level of sedation and respiratory status after midazolam, and allow longer observation before discharge or redosing.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Darifenacin
Frequently asked questions
Can I take Darifenacin with Midazolam intranasal?
MediHelp rates the interaction as moderate. Darifenacin and Midazolam intranasal can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Darifenacin is a weak CYP3A4 inhibitor and may modestly raise midazolam exposure. This could prolong or deepen sedation after intranasal midazolam.
How serious is the interaction between Darifenacin and Midazolam intranasal?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor the level of sedation and respiratory status after midazolam, and allow longer observation before discharge or redosing.
What other medicines interact with Darifenacin?
MediHelp also lists interactions of Darifenacin with, for example, Atazanavir, Bethanechol, Clarithromycin. The full list is on the Darifenacin page.
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