Drug interactions
Amobarbital + Solifenacin
Severity: Moderate
Amobarbital and Solifenacin: 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 induces CYP3A4 and can lower solifenacin concentrations, which may reduce control of overactive bladder symptoms. The effect develops over days to weeks and resolves after the barbiturate is stopped.
What this interaction means in plain words
Amobarbital and Solifenacin 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; Solifenacin belongs to Genitourinary.
Why it happens
Induction of CYP3A4 by amobarbital increases solifenacin metabolism.
What to do
Monitor symptom control and consider a higher solifenacin dose within labeled limits if efficacy is lost. Reassess dosing when the barbiturate is stopped.
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 Solifenacin
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 Solifenacin?
MediHelp rates the interaction as moderate. Amobarbital and Solifenacin 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 induces CYP3A4 and can lower solifenacin concentrations, which may reduce control of overactive bladder symptoms. The effect develops over days to weeks and resolves after the barbiturate is stopped.
How serious is the interaction between Amobarbital and Solifenacin?
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 symptom control and consider a higher solifenacin dose within labeled limits if efficacy is lost. Reassess dosing when the barbiturate is stopped.
What other medicines interact with Solifenacin?
MediHelp also lists interactions of Solifenacin with, for example, Adagrasib, Amiodarone, Amisulpride. The full list is on the Solifenacin page.
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