J Hematol Oncol. 2010 Jul 14;3:24.

Pancytopenia associated with clonazepam.

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Department of Pathology and Laboratory Medicine, Loma Linda University Medical Center, CA 92354, USA.

Abstract

We report a case of a 48-year-old Chinese female with end-stage renal disease and chronic anemia on hemodialysis. Clonazepam was prescribed for myoclonus disorder two weeks prior to her hospitalization. Subsequently, she was hospitalized for neutropenic fever with thrombocytopenia and worsening anemia. Bone marrow examination demonstrated a markedly hypocellular marrow (10-20% total cellularity). Clonazepam was discontinued, with gradual improvement of thrombocytopenia, and neutropenia in 1-2 weeks. To our knowledge, this is the first reported case of pancytopenia associated with clonazepam. We recommend patients taking clonazepam to be monitored with regular complete blood count to check for clinically significant pancytopenia or thrombocytopenia.

PMID:: 20630089; [PubMed - indexed for MEDLINE]
PMCID: PMC2915945

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Chemical compound information

Clonazepam

MW: 315.71 g/mol

MF: C₁₅H₁₀ClN₃O₃

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