Expectorant / opioid / sudafed combinations are used to treat cough, nasal congestion, and chest congestion. They work by combining an expectorant to thin mucus, an opioid to suppress cough, and a nasal decongestant to reduce nasal congestion. One example is codeine / guaifenesin / pseudoephedrine (Guaifenesin Dac, Virtussin Dac). All medicaitons in the class have been discontinued by their manufacturers and are no long available in the U.S. Speak to your healthcare team about suitable alternatives.