To Assess the Protective Effect of the Fixed Drug Combination of Disodium Cromoglycate Plus Reproterol

Inclusion Criteria: * Female and male subjects aged 18 - 65 years * Exercise induced asthma with reversible airway obstruction: twice proven EIA defined as maximum decrease in FEV1 against the baseline value of at least 20% (first test results can be obtained during the last 12 months) * Baseline FEV1 before challenge must be \> or = 70% of the predicted FEV1 Exclusion Criteria: Safety concerns: * Subjects with hypersensitivity to DSCG, reproterol, menthol, peppermint or other excipients of the study medication * Pregnancy, breast-feeding or planned pregnancy during the study. Women of child bearing potential not using a highly effective method of birth control defined as those which result in a low failure rate (i.e. \<1% per year) when used consistently and correctly such as implants, injectables, combined oral contraceptives, hormonal IUDs, tubal ligation or vasectomised partner * Subjects with an asthma exacerbation within 4 weeks prior to the study start. Asthma exacerbation defined as use of oral (systemic) glucocorticosteroids, unscheduled consultation of a medic due to asthma, hospitalisation, or additional treatment of asthma with antibiotics * Eosinophilic pneumonia * Clinically significant cardiovascular diseases (e.g. cardiac infarction, cardiac dysrhythmia, hypertrophic obstructive cardiomyopathy, coronary heart disease…) * Resting blood pressure over 140/90 mmHg * Diastolic blood pressure after treadmill-test over 120 mmHg * Malignancies including phaeochrom…