If you’re not sure how much Mucinex to take, talk to your doctor. Do not take more than the recommended amount of Mucinex unless your doctor directs you to do so. Most short-acting doses should be taken once every 4 hours. Extended-release or long-acting doses should be taken once every 12 hours. Adults and children over 12 can take 1 or 2 tablets that are 600 mg every 12 hours. Do not take more than 4 tablets within 24 hours.
If you have trouble swallowing pills, take Mucinex in liquid form.
Mucinex may also make you feel spacey or unable to concentrate. You may not want to perform tasks that require heavy concentration while you are taking it.
If you start coughing up thick or yellow phlegm, you may have an infection. See your doctor to get a prescription medication.
Diarrhea, nausea, or vomiting Stomach pain Dizziness Light headed feeling A “spacey” sensation or inability to concentrate Headache Hives or skin rash
There is conflicting evidence about how effective expectorants like Mucinex are for treating coughs. Some Mucinex products, such as Maximum Strength Mucinex, also contain a cough suppressant called dextromethorphan. This ingredient works by suppressing your brain’s cough reflex. Avoid taking dextromethorphan if you have a chronic cough or are coughing up large amounts of mucus. [9] X Research source If you are having trouble breathing, coughing up blood, or experiencing pain or pressure in your chest, call your doctor right away. [10] X Trustworthy Source Cleveland Clinic Educational website from one of the world’s leading hospitals Go to source
Mucinex makes several medications designed specifically for treating nasal and sinus symptoms. Some of these may contain additional ingredients aside from guaifenesin. For example, Mucinex Sinus-Max also contains acetaminophen (to treat pain) and phenylephrine (a decongestant). For this reason, you should not take Tylenol (which is also acetaminophen) at the same time as you take Mucinex.
Do not give Mucinex formulated for adults to a child under 12 years of age.
If you are in the first 3 months of breastfeeding, it is especially important to consult your doctor. If you take Mucinex while breastfeeding, your baby may become lethargic or less active.
A chronic cough associated with asthma, chronic bronchitis, or emphysema. A cough with excessive mucus or phlegm.
