The Additive Anti-inflammatory Effect of Simvastatin in Combination With Inhaled Corticosteroids in Asthma

Inclusion Criteria: * He or she has FEV1 \> 60% of predicted * He or she requires less than 1000 mcg daily of beclomethasone or equivalent Exclusion Criteria: * He or she had previous history of renal disease or serum creatinine more than 2 mg/dL * He or she had previous history of liver disease * She is pregnant or during lactation * He or she has already received statins or is allergic to statins or has developed myositis. * He or she has an asthma exacerbation and requires treatment with oral corticosteroids during the 3 months prior to the commencement of study entry.