Drug interactions
Amisulpride + Carbidopa-levodopa
Severity: Major
Amisulpride and Carbidopa-levodopa: 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
Amisulpride blocks dopamine receptors and can counteract the benefit of levodopa, worsening motor symptoms in Parkinson's disease. Levodopa may also reduce the antipsychotic effect.
What this interaction means in plain words
Amisulpride and Carbidopa-levodopa 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.
Amisulpride belongs to Central Nervous System; Carbidopa-levodopa belongs to Central Nervous System.
Why it happens
Pharmacodynamic antagonism: D2/D3 receptor blockade by amisulpride opposes dopaminergic stimulation from levodopa.
What to do
Avoid the combination where possible; if psychosis in Parkinson's disease needs treatment, use clozapine or quetiapine at low doses. Monitor motor function closely.
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 Carbidopa-levodopa
- Carbidopa-levodopa + Isocarboxazid Contraindicated
- Carbidopa-levodopa + Phenelzine Contraindicated
- Carbidopa-levodopa + Selegiline transdermal Contraindicated
- Carbidopa-levodopa + Tranylcypromine Contraindicated
- Asenapine + Carbidopa-levodopa Major
- Carbidopa-levodopa + Chlorpromazine Major
Other interactions of Amisulpride
- Amiodarone + Amisulpride Contraindicated
- Amisulpride + Arsenic trioxide Contraindicated
- Amisulpride + Disopyramide Contraindicated
- Amisulpride + Dofetilide Contraindicated
- Amisulpride + Droperidol Contraindicated
- Amisulpride + Ibutilide Contraindicated
Frequently asked questions
Can I take Amisulpride with Carbidopa-levodopa?
MediHelp rates the interaction as major. Amisulpride and Carbidopa-levodopa 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. Amisulpride blocks dopamine receptors and can counteract the benefit of levodopa, worsening motor symptoms in Parkinson's disease. Levodopa may also reduce the antipsychotic effect.
How serious is the interaction between Amisulpride and Carbidopa-levodopa?
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 psychosis in Parkinson's disease needs treatment, use clozapine or quetiapine at low doses. Monitor motor function closely.
What other medicines interact with Carbidopa-levodopa?
MediHelp also lists interactions of Carbidopa-levodopa with, for example, Isocarboxazid, Phenelzine, Selegiline transdermal. The full list is on the Carbidopa-levodopa page.
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