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Why is this medication prescribed?
Guanfacine is used to treat high blood pressure. It works by decreasing your heart rate and relaxing the blood vessels so that blood can flow more easily through the body.
This medication is sometimes prescribed for other uses; ask your doctor or pharmacist for more information.
How should this medicine be used?
Guanfacine comes as a tablet to take by mouth. It usually is taken once a day at bedtime. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take guanfacine exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor.
Guanfacine controls high blood pressure but does not cure it. Continue to take guanfacine even if you feel well. Do not stop taking guanfacine without talking to your doctor.
Abruptly stopping guanfacine may increase blood pressure and cause unwanted side effects.
Other uses for this medicine
Guanfacine also is used in the treatment of migraine headaches and drug withdrawal symptoms. Talk to your doctor about the possible risks of using this drug for your condition.
What special precautions should I follow?
Before taking guanfacine,
What special dietary instructions should I follow?
Your doctor may prescribe a low-salt or low-sodium diet. Follow these directions carefully.
What should I do if I forget a dose?
Take the missed dose as soon as you remember it. However, if it is almost time for the next dose, skip the missed dose and continue your regular dosing schedule. Do not take a double dose to make up for a missed one.
What side effects can this medication cause?
Although side effects from guanfacine are not common, they can occur. Tell your doctor if any of these symptoms are severe or do not go away:
If you experience any of the following symptoms, call your doctor immediately:
Keep this medication in the container it came in, tightly closed, and out of reach of children. Store at room temperature and away from excess heat and moisture (not in the bathroom). Throw away any medication that is outdated or no longer needed. Talk to your pharmacist about the proper disposal of your medication.
In case of emergency/overdose
In case of overdose, call your local poison control center at 1-800-222-1222. If the victim has collapsed or is not breathing, call local emergency services at 911.
What other information should I know?
Keep all appointments with your doctor and the laboratory. Your blood pressure should be checked regularly to determine your response to guanfacine.
Your doctor may ask you to check your pulse (heart rate) daily and will tell you how rapid it should be. Ask your doctor or pharmacist to teach you how to take your pulse. If your pulse is slower or faster than it should be, call your doctor before taking the drug that day.
To relieve dry mouth caused by guanfacine, chew gum or suck sugarless hard candy.
Do not let anyone else take your medication. Ask your pharmacist any questions you have about refilling your prescription.
Last updated: Tue, 06 Jan 2009 00:20:03 GMT