This combination medication is used to temporarily treat sneezing, runny/stuffy nose, and cough caused by allergies, hay fever, the common cold, or other breathing illnesses. This product is usually not used for ongoing cough from smoking or long-term breathing problems (such as chronic bronchitis, emphysema) unless directed by your doctor. Guaifenesin is an expectorant. It works by thinning and loosening mucus in the airways, clearing congestion, and making breathing easier. Decongestants treat nasal congestion by narrowing the blood vessels in the nose. The antihistamine blocks a substance (histamine) released by allergies and has a drying effect to help dry up a runny nose.
If you are self-treating with this medication, it is important to read the package instructions carefully before you start using this product to be sure it is right for you. (See also Precautions section.)
Cough-and-cold products have not been shown to be safe or effective in children younger than 6 years. Therefore, do not use this product to treat cold symptoms in children younger than 6 years unless specifically directed by the doctor. Some products (such as long-acting tablets/capsules) are not recommended for use in children younger than 12 years. Ask your doctor or pharmacist for more details about using your product safely.
These products do not cure or shorten the length of the common cold and may cause serious side effects. To decrease the risk for serious side effects, carefully follow all dosage directions. Do not use this product to make a child sleepy. Do not give other cough-and-cold medication that might contain the same or similar ingredients (see also Drug Interactions section). Ask the doctor or pharmacist about other ways to relieve cough and cold symptoms (such as drinking enough fluids, using a humidifier or saline nose drops/spray).
How To Use
Take this medication by mouth with a full glass of water unless otherwise directed by your doctor. This medication may be taken with food or milk if stomach upset occurs. If your doctor has prescribed this medication, follow your doctor's directions for taking this medication. If you are self-treating, follow all directions on the product package. To prevent trouble sleeping, do not take this medication close to bedtime. If you are uncertain about any of the information, ask your doctor or pharmacist.
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 you are taking a suspension, shake the bottle well before each use.
Guaifenesin may have a bitter taste. Swallow capsules and tablets whole. Some tablets may be split if they have a score line and your doctor or pharmacist tells you to do so.
Dosage is based on the product you are taking and on your age, medical condition, and response to treatment. Do not increase your dose or take this drug more often than directed.
Drink plenty of fluids while taking this medication unless otherwise directed by your doctor. Fluids will help to break up mucus and clear congestion.
Caffeine can increase the side effects of this medication. Avoid drinking large amounts of beverages containing caffeine (coffee, tea, colas), eating large amounts of chocolate, or taking nonprescription products that contain caffeine.
Tell your doctor if your condition is accompanied by fever, severe sore throat, rash, persistent headache, or if it persists, returns, or worsens after 7 days. These may be signs of a serious medical problem. Seek immediate medical attention if you think you may have a serious medical problem.