ipratropium bromide has not only an anticholinergic effect but also has an attenuating one on the contractile responses induced by serotonin , prostaglandin f2 alpha , histamine and bradykinin , and has a potentiating one on the relaxation responses induced by prostaglandin e2 , isoprenaline and adrenaline .
C0026820
contractile
C0006100
bradykinin