Generic Name: guanfacine, Oral tablet

Intuniv,Tenex

All Brands

  • Intuniv
  • Tenex
SECTION 1 of 4

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.
SECTION 2 of 4

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
SECTION 3 of 4

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
SECTION 4 of 4

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.

Overdosage: If you think you've taken too much of this medicine contact a poison control center or emergency room at once.

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.

Thank you.

Your message has been sent.

We're sorry, an error occurred.

We are unable to collect your feedback at this time. However, your feedback is important to us. Please try again later.

Last Updated: January 26, 2014

The Healthline Site, its content, such as text, graphics, images, search results, and other material contained on the Healthline Site ("Content"), its services, and any information or material posted on the Healthline Site by third parties are provided for informational purposes only. None of the foregoing is a substitute for professional medical advice, examination, diagnosis, or treatment. Always seek the advice of a physician or other qualified healthcare provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read on the Healthline Site. If you think you may have a medical emergency, call your doctor or 911 immediately. Please read the Terms of Service for more information regarding use of the Healthline Site.
Content licensed by
Gold Standard Logo

Healthline - Gold Standard License

Terms of Use

Licensee provides access to Alchemy provided by Gold Standard, Inc. ("Gold Standard"). Although Gold Standard makes reasonable efforts to ensure the accuracy and reliability of Alchemy, End User acknowledges and agrees that Licensee, its affiliates, and their respective officers, directors, employees and information providers and Gold Standard, its affiliates, its licensors, and their respective officers, directors, employees and information providers will not be held liable for any damages suffered or incurred by End User or any third person arising out of: a) any faults, interruptions or delays in Alchemy or its delivery, b) any use of or reliance on Alchemy by any person, or c) any inaccuracies, errors or omissions in Alchemy, irrespective of however such faults, interruptions, delays, inaccuracies, errors or omissions arise. Gold Standard shall not be liable to End User for any loss, cost or damages resulting from any delays in delivery and/or non-delivery of Alchemy or its content. End User acknowledges and agrees that its sole and exclusive remedy in the event of such delay is to not accept these terms and conditions. Gold Standard does not represent or warrant that Alchemy will meet the objectives or needs of End User or any third party. Gold Standard makes no warranty of merchantability of Alchemy or of the fitness of Alchemy for any purpose.

About Gold Standard

The Gold Standard editorial staff develops clinically-based drug information content through an independent, peer-reviewed process. Content updates to the database include new FDA-approved drugs, new non-prescription and herbal therapies, newly published information regarding FDA label changes and relevant clinical studies affecting off-label utilization. Editors do not have any significant financial relationships with the industry that would introduce bias in the editing or review of database content.

Read this Next

Beyond Back Pain: 5 Warning Signs of Ankylosing Spondylitis
Beyond Back Pain: 5 Warning Signs of Ankylosing Spondylitis
There are a number of potential causes of back pain, but one you might not know about is ankylosing spondylitis (AS). Find out five warning signs of AS in this slideshow.
Easy Ways to Conceal an Epinephrine Shot
Easy Ways to Conceal an Epinephrine Shot
Learn how to discreetly carry your epinephrine autoinjectors safely and discreetly. It’s easier than you think to keep your shots on hand when you’re on the go.
How to Evaluate Your Multiple Sclerosis Treatment Plan
How to Evaluate Your Multiple Sclerosis Treatment Plan
Every multiple sclerosis (MS) patient is different, and no single treatment plan works for everyone. Learn more about what to consider when evaluating your MS treatment plan.
Advertisement
Advertisement
Advertisement