Drug interactions
Amobarbital + Risperidone
Severity: Moderate
Amobarbital and Risperidone: 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
Both drugs depress the CNS, so together they can cause excessive sedation, dizziness and orthostatic hypotension. Barbiturate enzyme induction may also lower active risperidone levels.
What this interaction means in plain words
Amobarbital and Risperidone 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; Risperidone belongs to Central Nervous System.
Why it happens
Additive CNS depression plus CYP3A4 induction by amobarbital, which may reduce risperidone exposure.
What to do
Monitor sedation, blood pressure and psychotic symptoms. Increase the risperidone dose if efficacy is lost.
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 Amobarbital
- Amobarbital + Calcium / magnesium / potassium / sodium oxybates Contraindicated
- Amobarbital + Doravirine Contraindicated
- Amobarbital + Elbasvir / grazoprevir Contraindicated
- Amobarbital + Isavuconazonium Contraindicated
- Amobarbital + Isocarboxazid Contraindicated
- Amobarbital + Lonafarnib Contraindicated
Other interactions of Risperidone
- Ibutilide + Risperidone Contraindicated
- Risperidone + Vandetanib Contraindicated
- Adagrasib + Risperidone Major
- Amiodarone + Risperidone Major
- Amisulpride + Risperidone Major
- Amoxapine + Risperidone Major
Frequently asked questions
Can I take Amobarbital with Risperidone?
MediHelp rates the interaction as moderate. Amobarbital and Risperidone 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. Both drugs depress the CNS, so together they can cause excessive sedation, dizziness and orthostatic hypotension. Barbiturate enzyme induction may also lower active risperidone levels.
How serious is the interaction between Amobarbital and Risperidone?
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 sedation, blood pressure and psychotic symptoms. Increase the risperidone dose if efficacy is lost.
What other medicines interact with Amobarbital?
MediHelp also lists interactions of Amobarbital with, for example, Calcium / magnesium / potassium / sodium oxybates, Doravirine, Elbasvir / grazoprevir. The full list is on the Amobarbital page.
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