Asthma: MONARIN should be taken once daily in the evening (one 10-mg tablet).
Exercise-Induced Bronchoconstriction (EIB): For prevention of EIB, a single-dose of (one 10-mg tablet) of MONARIN should be taken at least 2 hours before exercise.
An additional dose of MONARIN should not be taken within 24 hours of a previous dose. Patients already taking MONARIN daily for another indication (including chronic asthma) should not take an additional dose to prevent EIB. All patients should have available for rescue a short-acting β-agonist. Daily administration of MONARIN for the chronic treatment of asthma has not been established to prevent acute episodes of EIB.