Drug interactions
Amifampridine + Thioridazine
Severity: Moderate
Amifampridine and Thioridazine: 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
Amifampridine causes dose-related seizures, and thioridazine, like other phenothiazines, can lower the seizure threshold. Combined use may raise seizure risk.
What this interaction means in plain words
Amifampridine and Thioridazine 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.
Amifampridine belongs to Central Nervous System; Thioridazine belongs to Central Nervous System.
Why it happens
Additive lowering of seizure threshold through different mechanisms.
What to do
Use the lowest effective amifampridine dose and monitor for seizure activity. Note that thioridazine also has QT-related risks and is generally reserved for refractory patients.
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 Thioridazine
- Abiraterone + Thioridazine Contraindicated
- Adagrasib + Thioridazine Contraindicated
- Amiodarone + Thioridazine Contraindicated
- Amisulpride + Thioridazine Contraindicated
- Amitriptyline + Thioridazine Contraindicated
- Amoxapine + Thioridazine Contraindicated
Other interactions of Amifampridine
- Amifampridine + Bupropion-naltrexone Major
- Amantadine + Amifampridine Moderate
- Amifampridine + Amitriptyline Moderate
- Amifampridine + Baclofen Moderate
- Amifampridine + Bethanechol Moderate
- Amifampridine + Bromocriptine Moderate
Frequently asked questions
Can I take Amifampridine with Thioridazine?
MediHelp rates the interaction as moderate. Amifampridine and Thioridazine 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. Amifampridine causes dose-related seizures, and thioridazine, like other phenothiazines, can lower the seizure threshold. Combined use may raise seizure risk.
How serious is the interaction between Amifampridine and Thioridazine?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Use the lowest effective amifampridine dose and monitor for seizure activity. Note that thioridazine also has QT-related risks and is generally reserved for refractory patients.
What other medicines interact with Thioridazine?
MediHelp also lists interactions of Thioridazine with, for example, Abiraterone, Adagrasib, Amiodarone. The full list is on the Thioridazine page.
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