You shouldnât take codeine if you're allergic to it (or to any other ingredients in the drug) or have trouble breathing. If you experience any of the following after starting codeine, talk to your doctor, as you may be allergic to the drug: Itching; Rash; Hives. Before taking codeine, tell you doctor if you have: Kidney or liver problems; Seizures
Mucinex does help thin out mucus but doesn't do anything to reduce the swelling and inflammation in your sinuses. There are several medical options for reducing this inflammation: 1. Try switching from a neti pot to a NeilMed Sinus Rinse bottle.
Mucinex D extended release tablets contain a combination of guaifenesin and pseudoephedrine. Guaifenesin is an expectorant. It helps loosen congestion in your chest and throat, making it easier to cough out through your mouth. Pseudoephedrine is a decongestant that shrinks blood vessels in the nasal passages. Dilated blood vessels can cause nasal congestion (stuffy nose). Mucinex D tablets are used to treat nasal and sinus congestion. Mucinex D also is used to reduce chest congestion caused by the common cold, infections, or allergies. Mucinex D may also be used for purposes other than those listed.