Active Ingredient(s):Guaifenesin + Theophylline Category:Asthma
Guaifenesin, sold under the brand name Mucinex, among others, is a medication used as an expectorant, intended to help cough out phlegm from the airways. Chemically it is an ether of guaiacol and glycerine. It is unclear if it decreases coughing. Use is not recommended in children less than 6 years old. It is often used in combination with other medications. It is taken by mouth.