Guaifenesin

Description:Guaifenesin (INN) or guaiphenesin (former BAN), also glyceryl guaiacolate,[1] is an expectorant drug sold over the counter and usually taken by mouth to assist the bringing up (expectoration) of phlegm from the airways in acute respiratory tract infections.The principal use of guaifenesin is in the treatment of coughing, but the drug has numerous other uses, including medical, veterinary, and personal.