CHLORPHENIRAMINE (klor fen IR a meen) is an antihistamine. It is used to treat sneezing, runny nose, and itchy or watery eyes from allergies or a cold. It is also used to treat the symptoms of an allergic reaction. This medicine will not treat an infection.
What should I tell my health care provider before I take this medicine?
They need to know if you have any of these conditions:
high blood pressure
lung or breathing disease, like asthma
pain or difficulty passing urine
ulcers or other stomach problems
an unusual or allergic reaction to chlorpheniramine, other medicines, foods, dyes, or preservatives
pregnant or trying to get pregnant
How should I use this medicine?
Take this medicine by mouth. Follow the directions on the prescription label. Use a specially marked spoon or dropper to measure each dose. Ask your pharmacist if you do not have one. Household spoons are not accurate. Take your medicine at regular intervals. Do not take your medicine more often than directed.
Talk to your pediatrician regarding the use of this medicine in children. While this drug may be prescribed for children as young as 2 years old for selected conditions, precautions do apply.
Patients over 65 years old may have a stronger reaction and need a smaller dose.
What if I miss a dose?
If you miss a dose, take it as soon as you can. If it is almost time for your next dose, take only that dose. Do not take double doses.
What may interact with this medicine?
barbiturate medicines for sleep or seizures
MAOIs like Carbex, Eldepryl, Marplan, Nardil, and Parnate
medicines for allergies
medicines for depression, anxiety, or psychotic disturbances
medicines for sleep
What should I watch for while using this medicine?
Tell your doctor if your symptoms do not improve or if they get worse.
Your mouth may get dry. Chewing sugarless gum or sucking hard candy, and drinking plenty of water may help. Contact your doctor if the problem does not go away or is severe.
This medicine may cause dry eyes and blurred vision. If you wear contact lenses you may feel some discomfort. Lubricating drops may help. See your eye doctor if the problem does not go away or is severe.
You may get drowsy or dizzy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this medicine affects you. Do not stand or sit up quickly, especially if you are an older patient. This reduces the risk of dizzy or fainting spells. Alcohol may interfere with the effect of this medicine. Avoid alcoholic drinks.
This medicine can make you more sensitive to the sun. Keep out of the sun. If you cannot avoid being in the sun, wear protective clothing and use sunscreen. Do not use sun lamps or tanning beds/booths.
Note: This information is not intended to cover all possible uses, precautions, interactions, or adverse effects for this drug. If you have question about the drug(s) you are taking, check with your health care professional.