in a randomized , double-blind , parallel-group trial , 47 children with acute asthma received a combination of ipratropium bromide solution ( 250 micrograms ) and fenoterol hydrobromide solution ( 625 micrograms ) , fenoterol solution ( 625 micrograms ) alone , or ipratropium solution ( 250 micrograms ) alone , administered by face mask and nebulizer , with the dose repeated 60 minutes later .
C0700453
fenoterol hydrobromide
C0015840
fenoterol