Drug interactions
Amobarbital + Darifenacin
Severity: Moderate
Amobarbital and Darifenacin: 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
Amobarbital is an inducer of CYP3A4 and may lower darifenacin exposure, potentially reducing control of overactive bladder symptoms. The effect is predicted from the mechanism and enzyme induction.
What this interaction means in plain words
Amobarbital and Darifenacin 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.
Amobarbital belongs to Central Nervous System; Darifenacin belongs to Genitourinary.
Why it happens
Induction of CYP3A4 by barbiturate increases darifenacin metabolism.
What to do
Monitor for loss of bladder symptom control and increase the darifenacin dose within the labeled range if needed. Consider an alternative if response stays inadequate.
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
Other interactions of Amobarbital
- Amobarbital + Calcium / magnesium / potassium / sodium oxybates Contraindicated
- Amobarbital + Doravirine Contraindicated
- Amobarbital + Elbasvir / grazoprevir Contraindicated
- Amobarbital + Isavuconazonium Contraindicated
- Amobarbital + Isocarboxazid Contraindicated
- Amobarbital + Lonafarnib Contraindicated
Frequently asked questions
Can I take Amobarbital with Darifenacin?
MediHelp rates the interaction as moderate. Amobarbital and Darifenacin 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. Amobarbital is an inducer of CYP3A4 and may lower darifenacin exposure, potentially reducing control of overactive bladder symptoms. The effect is predicted from the mechanism and enzyme induction.
How serious is the interaction between Amobarbital and Darifenacin?
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 for loss of bladder symptom control and increase the darifenacin dose within the labeled range if needed. Consider an alternative if response stays inadequate.
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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