Guaifenesin, USP 100 mg and codeine Phosphate, USP 10 mg and alcohol 3.5 percent. In a palatable, aromatic syrup. This syrup preparation combines the expectorant, guaifenesin, with the cough suppressant, codeine. Guaifenesin enhances the output of lower respiratory tract fluid. The enhanced flow of less viscid secretions promotes and facilitates the removal of mucus.
Codeine is a centrally acting agent which elevates the threshold for cough.
As a result, dry, unproductive coughs become more productive and less frequent. Under Federal law, this preparation is available without a prescription. Certain state laws may differ. A persistent cough may be a sign of a serious condition. If cough persists for more than 1 week, tends to recur, or is accompanied by fever, rash, or persistent headache, consult a doctor.