Drug interactions
Carbidopa + Silodosin
Severity: Minor
Carbidopa and Silodosin: 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 used with levodopa, and the levodopa combination can cause orthostatic hypotension that adds to the alpha-blocker effect. Carbidopa alone has little hemodynamic effect.
What this interaction means in plain words
Carbidopa and Silodosin 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; Silodosin belongs to Genitourinary.
Why it happens
Additive blood pressure lowering, mainly through levodopa when carbidopa is given in combination, plus silodosin's alpha-1A blockade.
What to do
Monitor orthostatic blood pressure when silodosin is added to carbidopa/levodopa. Advise patients to rise slowly.
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 Silodosin
- Atazanavir + Silodosin Contraindicated
- Conivaptan + Silodosin Contraindicated
- Darunavir + Silodosin Contraindicated
- Fosamprenavir + Silodosin Contraindicated
- Indinavir + Silodosin Contraindicated
- Itraconazole + Silodosin Contraindicated
Other interactions of Carbidopa
Frequently asked questions
Can I take Carbidopa with Silodosin?
MediHelp rates the interaction as minor. Carbidopa and Silodosin 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 used with levodopa, and the levodopa combination can cause orthostatic hypotension that adds to the alpha-blocker effect. Carbidopa alone has little hemodynamic effect.
How serious is the interaction between Carbidopa and Silodosin?
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 orthostatic blood pressure when silodosin is added to carbidopa/levodopa. Advise patients to rise slowly.
What other medicines interact with Silodosin?
MediHelp also lists interactions of Silodosin with, for example, Atazanavir, Conivaptan, Darunavir. The full list is on the Silodosin page.
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