Drug interactions
aspirin + clopidogrel
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.
Overview
Additive antiplatelet effects increase risk of major bleeding (GI, intracranial). Commonly co-prescribed as DAPT when indicated.
Mechanism of action
Pharmacodynamic: COX-1 inhibition (aspirin) plus P2Y12 receptor blockade (clopidogrel) → reduced platelet aggregation.
Clinical management
Use only with a clear indication; prefer low-dose aspirin (75–100 mg/day). Assess bleeding risk; consider PPI for GI protection if high risk; monitor for bleeding and hemoglobin/hematocrit.
Drug reference
Frequently asked questions
Can I take aspirin with clopidogrel?
The interaction is rated: Major. Additive antiplatelet effects increase risk of major bleeding (GI, intracranial). Commonly co-prescribed as DAPT when indicated.
How serious is the interaction between aspirin and clopidogrel?
The interaction is rated: Major. Evidence level: High.
How is the interaction between aspirin and clopidogrel managed?
Use only with a clear indication; prefer low-dose aspirin (75–100 mg/day). Assess bleeding risk; consider PPI for GI protection if high risk; monitor for bleeding and hemoglobin/hematocrit.
Why do aspirin and clopidogrel interact?
Pharmacodynamic: COX-1 inhibition (aspirin) plus P2Y12 receptor blockade (clopidogrel) → reduced platelet aggregation.
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