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An idiosyncratic reaction to clopidogrel
Aaysha Kapila1, Lovely Chhabra2, Allison Diane Locke3
1Internist at East Tennessee State University in Johnson City. aaysha.dr@gmail.com.
The Permanente Journal
|February 10, 2015
Summary
Clopidogrel, an antiplatelet drug, can rarely cause liver damage (hepatotoxicity). This case highlights a rare but significant risk associated with this commonly prescribed medication.
Area of Science:
- Pharmacology
- Hepatology
- Clinical Medicine
Background:
- Clopidogrel is a thienopyridine antiplatelet agent that irreversibly blocks the P2Y12 receptor.
- It inhibits platelet activation and fibrinogen-platelet complex formation, replacing ticlopidine due to a superior safety profile.
- Clopidogrel is a prodrug requiring hepatic activation for its therapeutic effect.
Observation:
- Hepatotoxicity is a rare but clinically significant adverse effect of clopidogrel.
- This phenomenon necessitates careful monitoring in patients receiving the drug.
Findings:
- This report details a case of clopidogrel-induced hepatotoxicity in an elderly white female patient.
- The patient's presentation underscores the potential for liver injury despite the drug's generally favorable safety profile.
Implications:
- Clinicians should be vigilant for signs of liver injury in patients taking clopidogrel.
- Understanding rare adverse drug reactions is crucial for patient safety and optimizing antiplatelet therapy.
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