Regular treatment with long acting beta agonists versus daily regular treatment with short acting beta agonists in adults and children with stable asthma.

Selective beta-adrenergic agonists for use in asthma are: short acting (2-6 hours) and long acting (>12 hours). There has been little controversy about using short acting beta-agonists intermittently, but long acting beta-agonists are used regularly, and their regular use has been controversial.