Another approach might be to
avoid these two combination drugs, Advair
and Symbicort, and substitute individual inhalert for each of the two drugs (the inhaled steroid and the beta-agonist). You could then reduce the dose of the beta agonist but, unfortunately that could not be done with a metered dose inhaler; would require the use of a nebulizer. You should also discuss this with your doctor.
I mentioned individual sensitivity to the beta-agonist class of drugs.