Drug interactions
Lisuride + Thioridazine
Severity: Major
Lisuride and Thioridazine: major 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
Lisuride is a dopamine agonist while thioridazine blocks dopamine receptors, so each opposes the other's effect. Parkinsonian control may worsen and psychotic symptoms may not be controlled.
What this interaction means in plain words
Lisuride and Thioridazine can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Why it happens
Pharmacodynamic antagonism at dopamine D2 receptors.
What to do
Avoid the combination where possible. If an antipsychotic is needed in a patient on dopamine agonists, choose low-D2-affinity agents such as quetiapine or clozapine.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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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
Frequently asked questions
Can I take Lisuride with Thioridazine?
MediHelp rates the interaction as major. Lisuride and Thioridazine can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Lisuride is a dopamine agonist while thioridazine blocks dopamine receptors, so each opposes the other's effect. Parkinsonian control may worsen and psychotic symptoms may not be controlled.
How serious is the interaction between Lisuride and Thioridazine?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid the combination where possible. If an antipsychotic is needed in a patient on dopamine agonists, choose low-D2-affinity agents such as quetiapine or clozapine.
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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