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 is unique because it also contains a drug called dextromethorphan, which controls coughing by creating a message to the part of your brain that controls your cough reflex. Both Mucinex and Mucinex DM come in maximum strength versions as well. The side effects of both are similar to one another and can include diarrhea, dizziness, headache, drowsiness and stomach pain. Some of the other drugs that shouldnât be used with Mucinex DM include many drugs used to treat psychiatric disorders including depression, and Parkinsonâs disease medications.