Pseudoephedrine is used to treat stuffy noses and sinus pain/pressure caused by infection (such as the common cold or flu) or other respiratory illnesses (such as hay fever, allergies, and bronchitis). The decongestant pseudoephedrine (sympathomimetic). It works by constricting blood vessels and reducing swelling and congestion. If you are self-medicating with this medication, it is critical that you carefully read the manufacturer’s package instructions so you know when to consult your doctor or pharmacist. (See also the section on Precautions.) Cough and cold remedies have not been proven to be safe or effective in children under the age of six. Long-acting tablets/capsules are not recommended for children under the age of 12. Unless otherwise directed by a doctor, do not use this pseudoephedrine product in children under the age of 12. Inquire with your doctor or pharmacist for more information on how to use your product safely. These products do not cure or shorten the duration of a common cold, and they may have serious side effects. To reduce the possibility of serious side effects, carefully follow all dosage instructions. This product should not be used to put a child to sleep. Other cough and cold medications that may contain the same or similar ingredients should not be given (see also Drug Interactions section). Inquire with your doctor or pharmacist about other ways to relieve cough and cold symptoms (such as drinking plenty of fluids, using a humidifier, or using saline nose drops/spray).