Edit this into correct english please.. 10 points!?

"Advair Diskus is an inhaled DRUG THAT contains Fluticasone, an anti-inflammatory corticosteroid, and Salmeterol, a bronchodilator of the beta-2 agonist type. Fluticasone works by PREVENTING the release of substances, while Salmeterol works by relaxing muscles in the airways to improve breathing. Advair Diskus is a prescription DRUG used to treat Asthma and Chronic Bronchitis. Advair Diskus’s generic DRUGS are Fluticasone/Salmeterol or other NAMES(?) that contain this active ingredient. Sold at much lower PRICES than ITS branded counterpart. The calculation below will show you."