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(KTVI) - More than 300 million people in the world suffer from Asthma. It's a condition in which the airways become inflamed and constrict. It can be managed but not cured.
Some of the more common asthma drugs have side effects and Dr. Mario Castro from Washington University needs volunteers to help curb those side effects. The study would give lower doses of the medicine to people who have asthma.
There are three drugs, each made by different companies: Dulera, Advair and Symbicort.