Mucinex can generally be taken every 12 hours. For regular or maximum-strength tablets, the typical recommendation is to take one or two tablets every 12 hours, but do not exceed four tablets in 24 hours. For maximum-strength tablets, take no more than one tablet every 12 hours and no more than two tablets in 24 hours. It is important to follow the specific product instructions and not increase the dose or frequency beyond the recommended amount. Also, drink plenty of fluids while using Mucinex to help thin and loosen mucus. If using Mucinex DM (which contains an additional cough suppressant), the usual advice is to take it every 12 hours with no more than two doses in 24 hours. Do not take it more often or for longer than directed on the package or by a doctor. For children under 12 years, Mucinex is generally not recommended without a doctor's guidance. Always read the product label carefully and consult a healthcare professional if there are any doubts or if symptoms persist beyond 7 days, worsen, or include fever or rash.
