CONTEXT Recent epidemiologic studies have raised the concern that calcium channel blocker use may increase the risk of cancer overall and of several specific cancers. OBJECTIVE To assess whether calcium channel blocker use increases the risk of cancer overall and of specific cancers. DESIGN Case-control drug surveillance study based on data collected from 1983 to 1996. SETTING Hospitals i...

BACKGROUND Calcium channel blockers are commonly prescribed medications; calcium channel blocker overdose is becoming increasingly prevalent. The typical presentation of a calcium channel blocker overdose is hypotension and decreased level of consciousness. We describe a case of a calcium channel blocker overdose that led to bilateral cortical blindness, a presentation that has not previously b...