Cheratussin AC (codeine, guaifenesin) is a combination drug belonging to the expectorant and opioid combination drug class. Cheratussin AC is prescribed to individuals to reduce cough and chest congestion caused by the common cold or flu.
Cheratussin AC (codeine phosphate/guaifenesin) is a combination medication used to treat various common cold symptoms and other upper respiratory infections. It is a combination of two medicines, codeine phosphate and guaifenesin. Codeine phosphate is the cough suppressant agent in Cheratussin AC that works in the brain to triggering cough reflex. Guaifenesin is an expectorant agent and works by clearing nasal congestion and loosening and thinning mucus in the airways to allow for easy inhalation. Guaifenesin also helps patients cough up the mucus to clear the airways. Cheratussin AC is available in the form of capsules, tablets or liquid and it is for oral administration only. After taking this drug, the possible side effects includes drowsiness, headache, nausea and trouble sleeping.