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The association of age with risk for severe adverse drug reactions (SADRs) was studied in 2371 and 862 hospitalized patients taking nifedipine and verapamil, respectively. Nifedipine caused hypotension (n = 22), tachycardia (n = 3), and acute renal failure (n = 1) (total SADR rate, 1.1%, 262371). Verapamil caused hypotension (n = 3), bradycardia (n = 9), and atrioventricular blocks (n = 2) (total...
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