Bronchial Challenge Test of Magnesium-treated Asthmatics

Metacholine-provocation of Mablet-treated Asthmatics

The present study is part of a project titled 'Magnesium in asthma and chronic obstructive pulmonary disease'. The hypothesis of the main project is that a daily magnesium supplement will benefit patients with asthma and chronic obstructive pulmonary disease.

The aim of this part of the project is to study the effect of a daily magnesium supplement on the grade of bronchial hyperreactivity in asthmatics.

Inclusion Criteria:

• Asthma with annual symptoms, bronchial hyperreactivity and positive metacholine-test (PD20<1000 microgram

Exclusion Criteria:

• Se-Mg > 2,00 mmol/L, smoking cessation less than 1 year prior to study start, major changes in eating habits within three months prior to study start and during the study period of approx. one year, various conditions (e.g. gastrointestinal disease, kidney disease, pregnancy/lactation) that may affect the study results.