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Mucinex contains the drug guaifenesin, which is an expectorant that loosens mucus. This makes it easier for the body to expel mucus and subsequently relieves congestion, according to the Mucinex website. Certain types of Mucinex, such as Mucinex DM, also relieve coughin...


Mucinex products help with sinus congestion through their active ingredients of pseudoephedrine, phenylephrine and oxymetazoline. These medications are nasal decongestants that work by shrinking inflamed mucous membranes inside the nose, as Mucinex's official website ex...


The dosage of Mucinex Fast-Max for adults and children over age 12 is 20 milliliters of liquid or two caplets every four hours, according to the Mucinex website. Children under the age of 12 should not take this medication.


Mucinex works by making the mucus thinner and less sticky thus making it easy for a person to cough. The drug is used to treat the symptoms of cough caused by flu and common colds.


Mucinex is an effective drug for treating the symptoms of the common cold and flu. It works by diluting the mucus and making it less sticky, to make coughing easier.


Some Mucinex warnings include avoiding use of the medication in children under 12 years of age and not taking other cough and cold medicines featuring the same or similar ingredients, notes WebMD. An individual should follow all dosage directions and should make the pre...


Common side effects of Mucinex include nausea and vomiting, explains Drugs.com. People who are allergic to Mucinex can have several symptoms, such as difficulty breathing, hives, rash, chest tightness and swelling of the lips, tongue or mouth.