Drug interactions
Carbidopa + Fosinopril
Severity: Minor
Carbidopa and Fosinopril: minor 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
Carbidopa is given with levodopa and the combination can cause orthostatic hypotension. Together with fosinopril, blood pressure lowering may be enhanced, though carbidopa alone has little effect.
What this interaction means in plain words
Carbidopa and Fosinopril have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Carbidopa belongs to Central Nervous System; Fosinopril belongs to Cardiovascular.
Why it happens
Additive hypotension, mainly from levodopa-derived dopamine, combined with ACE inhibition.
What to do
Monitor blood pressure when starting levodopa/carbidopa and reduce the antihypertensive dose if symptomatic hypotension occurs.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Fosinopril
- Aliskiren + Fosinopril Contraindicated
- Fosinopril + Protein a column Contraindicated
- Fosinopril + Sacubitril / valsartan Contraindicated
- Fosinopril + Sacubitril-valsartan Contraindicated
- Amifostine + Fosinopril Major
- Amiloride + Fosinopril Major
Other interactions of Carbidopa
Frequently asked questions
Can I take Carbidopa with Fosinopril?
MediHelp rates the interaction as minor. Carbidopa and Fosinopril have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Carbidopa is given with levodopa and the combination can cause orthostatic hypotension. Together with fosinopril, blood pressure lowering may be enhanced, though carbidopa alone has little effect.
How serious is the interaction between Carbidopa and Fosinopril?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor blood pressure when starting levodopa/carbidopa and reduce the antihypertensive dose if symptomatic hypotension occurs.
What other medicines interact with Fosinopril?
MediHelp also lists interactions of Fosinopril with, for example, Aliskiren, Protein a column, Sacubitril / valsartan. The full list is on the Fosinopril page.
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