Generic Name: guanfacine, Oral tablet

Generic Name:

guanfacine, Oral tablet

All Brands

SECTION 1 of 5

Highlights for guanfacine

Oral tablet
1
GUANFACINE (GWAHN fa seen) is used to treat attention-deficit hyperactivity disorder (ADHD).
2 3 4
Talk to your healthcare provider if you have any of these conditions.
5
Know what to watch for and get tips for reducing your risks while taking this drug.
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guanfacine Side Effects

Oral tablet

Side effects that you should report to your doctor or health care professional as soon as possible:

  • allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
  • changes in emotions or moods
  • chest pain or chest tightness
  • signs and symptoms of low blood pressure like dizziness; feeling faint or lightheaded, falls; unusually weak or tired
  • unusually slow heartbeat

Side effects that usually do not require medical attention (Report these to your doctor or health care professional if they continue or are bothersome.):

  • dizziness
  • dry mouth
  • irritability
  • headache
  • loss of appetite
  • nausea, vomiting
  • stomach pain
  • tiredness
  • trouble sleeping
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guanfacine May Interact with Other Medications

Oral tablet
  • certain medicines for anxiety or sleep
  • certain medicines for blood pressure, heart disease, irregular heart beat
  • certain medicines for depression, anxiety, or psychotic disturbances
  • certain medicines for seizures like carbamazepine, phenobarbital, phenytoin
  • ketoconazole
  • narcotic medicines for pain
  • rifampin
Disclaimer: Our goal is to provide you with the most relevant and current information. However, because drugs interact differently in each person, we cannot guarantee that this information includes all possible interactions. This information is not a substitute for medical advice. Always speak with your healthcare provider about possible interactions with all prescription drugs, vitamins, herbs and supplements, and over-the-counter drugs that you are taking.
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How to Use guanfacine

Oral tablet

Take this medicine by mouth with a glass of water. Follow the directions on the prescription label. Do not cut, crush or chew this medicine. Do not take this medicine with a high-fat meal. Take your medicine at regular intervals. Do not take it more often than directed. Do not stop taking except on your doctor's advice.

This drug may be prescribed for children as young as 6 years. Talk to your doctor if you have any questions.

What should I tell my health care provider before I take this medicine?

They need to know if you have any of these conditions:

  • heart disease
  • kidney disease
  • liver disease
  • low blood pressure or slow heart rate
  • an unusual or allergic reaction to guanfacine, other medicines, foods, dyes, or preservatives
  • pregnant or breast-feeding
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 or extra doses. If you miss 2 or more doses in a row, you should contact your doctor or health care professional. You may need to restart your medicine at a lower dose.

What should I watch for while using this medicine?

Visit your doctor or health care professional for regular checks on your progress. Check your heart rate and blood pressure as directed. Ask your doctor or health care professional what your heart rate and blood pressure should be and when you should contact him or her.

You may get drowsy or dizzy. Do not ride a bicycle, drive, or do anything that needs mental alertness until you know how this medicine affects you. Do not stand or sit up quickly. This reduces the risk of dizzy or fainting spells. Avoid cough and cold medicines, alcohol, and activities that may make you drowsy or dizzy.

Avoid becoming dehydrated or overheated while taking this medicine.

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.

Where should I keep my medicine?

Keep out of the reach of children.

Store at room temperature between 15 and 30 degrees C (59 and 86 degrees F). Throw away any unused medicine after the expiration date.

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How Much Does guanfacine Cost?

Oral tablet
We've partnered with GoodRX so you can compare prices and save money on your next prescription. Check out the lowest cash prices below and enter your zip code to find the best deal near you.

Compare prices and save money on your next refill!

Lowest price for guanfacine

Walmart $4.00
Kroger Pharmacy $4.00
Target $4.00
These represent the lowest cash prices for guanfacine and may be lower than your insurance.

Find the lowest prices of guanfacine near you

These represent the lowest cash prices for guanfacine and may be lower than your insurance.

Last Updated: November 26, 2014

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