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[Acute granulocytopenia caused by cimetidine]
Wiener Medizinische Wochenschrift (1946)
|March 31, 1984
Summary
H2 receptor-antagonist Cimetidine can cause low white blood cell counts (leukopenia or granulocytopenia) in patients. Stopping Cimetidine therapy led to normalization of blood cell counts within four days.
Area of Science:
- Pharmacology
- Hematology
- Internal Medicine
Background:
- H2 receptor antagonists are commonly prescribed for gastrointestinal conditions.
- Cimetidine, a widely used H2 receptor antagonist, has potential side effects.
- The study investigates a specific adverse hematological effect of Cimetidine.
Observation:
- Three patients developed leukopenia or granulocytopenia while receiving intravenous Cimetidine.
- These patients were also treated with other potentially cytotoxic medications concurrently.
- The adverse hematological effects were noted during Cimetidine administration.
Findings:
- Discontinuation of Cimetidine therapy resulted in the normalization of white blood cell counts in all observed patients.
- Hematological recovery occurred within four to seven days after cessation of Cimetidine.
- The observed leukopenia/granulocytopenia appears to be reversible upon drug withdrawal.
Implications:
- Clinicians should monitor blood cell counts in patients receiving Cimetidine, especially those on concurrent cytotoxic therapies.
- This finding highlights a potential drug-induced hematological toxicity associated with Cimetidine.
- Further research may be warranted to elucidate the mechanism of Cimetidine-induced cytopenias.