if you are taking the over-the-counter product read and follow all directions on the package label. if your doctor has prescribed this medication for you take as directed by your doctor. if you have any questions consult your doctor or pharmacist. take this medication by mouth with or without food or as directed by your doctor. if stomach upset occurs it may help to take this medication with food or milk. drink plenty of fluids when you use this medication unless otherwise directed by your doctor. the fluid will help loosen the mucus in your lungs. if you are using the liquid form of this medication carefully measure the dose using a special measuring device/spoon. do not use a household spoon because you may not get the correct dose. if your liquid form is a suspension shake the bottle well before each dose. if you are taking the extended-release capsules swallow them whole. do not crush or chew extended-release capsules or tablets. doing so can release all of the drug at once increasing the risk of side effects. also do not split extended-release tablets unless they have a score line and your doctor or pharmacist tells you to do so. swallow the whole or split tablet without crushing or chewing. if you are taking the chewable form of this medication chew it thoroughly before swallowing. the dosage is based on your age medical condition and response to treatment. do not increase your dose take it more frequently or use it for a longer time than directed. do not give children medicines labeled only for adults. tell your doctor if your condition persists for more than 1 week if it worsens or if it occurs with rash persistent headache or fever lasting more than 3 days. these may be symptoms of a serious medical problem and should be checked by a doctor.
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