Abstract
A novel calcium entry blocker, nicardipine, has been tested using a dosage of 20 mg twice a day against placebo on 30 patients suffering from migraine without aura, according to a double-blind, cross-over design; overall duration of the study was four months (two with nicardipine and two with placebo). Migraine parameters such as monthly frequency, mean intensity and mean duration of attacks were monitored. Two indexes were also calculated: index A (monthly frequency x mean intensity) and index B (monthly frequency x mean intensity x mean duration). All the parameters considered and the two indexes showed a marked and significant improvement after nicardipine treatment in comparison to both placebo and pre-study scores. Detailed analysis of the cross-over results showed that improvement obtained with nicardipine lasted some time after the drug was discontinued. Nicardipine did not alter the blood and attention tests performed and caused few side effects.
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