Asthma, Conditions Associated With Reversible Airways Obstruction:
Adult (patients Who Have Previously Tolerated Beta 2-agonists): 20 Mg Once Daily, Dose To Be Taken At Bedtime;
Adult: (patients Who Have Not Previously Tolerated Beta 2-agonists): Initially 10 Mg Once Daily For 1-2 Weeks, Then Increased If Necessary To 20 Mg Once Daily, Dose To Betaken At Bedtime