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 DM relieves coughing caused by the common cold, bronchitis and allergies. It contains the expectorant guaifenesin, which loosens mucus in the lungs and airways, allowing coughs to be productive. It also contains dextromethorphan, which affects the brain by suppressing the urge to cough.