Drug interactions
Clopidogrel + Conivaptan
Severity: Minor
Clopidogrel and Conivaptan: 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
Conivaptan is a CYP3A4 inhibitor that could reduce activation of clopidogrel in theory. Conivaptan is used for short-term inpatient hyponatremia treatment, so the effect is likely small.
What this interaction means in plain words
Clopidogrel and Conivaptan have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
CYP3A4 inhibition may slightly reduce clopidogrel bioactivation.
What to do
No dose adjustment is usually needed. Be aware of possible reduced antiplatelet effect in patients at very high thrombotic risk.
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 Clopidogrel
Frequently asked questions
Can I take Clopidogrel with Conivaptan?
MediHelp rates the interaction as minor. Clopidogrel and Conivaptan have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Conivaptan is a CYP3A4 inhibitor that could reduce activation of clopidogrel in theory. Conivaptan is used for short-term inpatient hyponatremia treatment, so the effect is likely small.
How serious is the interaction between Clopidogrel and Conivaptan?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No dose adjustment is usually needed. Be aware of possible reduced antiplatelet effect in patients at very high thrombotic risk.
What other medicines interact with Clopidogrel?
MediHelp also lists interactions of Clopidogrel with, for example, Ombitasvir / paritaprevir / ritonavir and dasabuvir, Abrocitinib, Acetylsalicylic acid. The full list is on the Clopidogrel page.
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