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. 1987 Mar;62(3):264–268. doi: 10.1136/adc.62.3.264

Nebulised sodium cromoglycate and verapamil in methacholine induced asthma.

A L Boner, G Vallone, A Andreoli, R Biancotto, J O Warner
PMCID: PMC1778310  PMID: 3105472

Abstract

Fifteen children with asthma underwent challenges with methacholine on separate days after double blind administration by nebuliser of either verapamil (5 mg), cromoglycate (20 mg), or saline (placebo). The provocation doses that produced a 20% fall in forced expiratory volume in one second (PD20) were analysed. There was variation in the protective effects of verapamil and cromoglycate among the patients. Although cromoglycate produced an increase in PD20 in 53% of the children tested, the protection was not significant when compared with the placebo. Verapamil was partially protective, however, in 80% of children and achieved significantly better results than the placebo. We suggest that this is likely to be due to a direct effect on bronchial smooth muscle.

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Selected References

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