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Common Brand Names: Intuniv, Tenex

Drug Information

Medically reviewed by Jessica Swirble, PharmD
Last updated on March 16, 2024

Drug Information | Side Effects | Use & Dosage | Request a Prescription

Quick facts
  • Brand Name: Intuniv, Tenex
  • Generic Name: Guanfacine
  • Uses: Treatment for ADHD and hypertension
  • Drug Class: Alpha-2 adrenergic agonist
  • Availability: Prescription only
  • Generic Status: Yes
  • Controlled Substance: No

What is guanfacine?

Guanfacine is a medication primarily used to treat attention deficit hyperactivity disorder (ADHD) in children and teenagers. Extended-release guanfacine tablets are prescribed as a treatment for attention-deficit hyperactivity disorder (ADHD) in children.

What conditions does guanfacine treat?

Guanfacine is prescribed for the treatment of ADHD as part of a comprehensive treatment plan that may include other therapies such as behavioral therapy. It is also used to lower blood pressure in patients with hypertension (high blood pressure).

How does guanfacine work?

Guanfacine belongs to a class of medications known as alpha-2 adrenergic agonists. It works by stimulating certain receptors in the brain, which helps to improve attention, impulse control, and behavior in individuals with ADHD. In the treatment of hypertension, guanfacine works by relaxing blood vessels, thereby reducing blood pressure.

How do I take guanfacine?

Guanfacine is available as an oral tablet or extended-release tablet. It can usually be taken with or without food. Immediate-release tablets should be taken at bedtime, as they cause drowsiness, while extended-release guanfacine can be taken at any time.

Do not take extended-release guanfacine with high-fat meals.

Follow your healthcare provider's instructions regarding the dosage and administration of guanfacine.

How long until I feel better?

The time it takes to notice the effects of guanfacine may vary depending on the individual and the condition being treated. Improvement in ADHD symptoms may be noticed within a few weeks of starting treatment, while the effects on blood pressure may be observed sooner. It's important to continue taking guanfacine as prescribed, even if you don't notice immediate changes.

Are there other uses for guanfacine?

Guanfacine may also be prescribed off-label for conditions such as anxiety disorders, tic disorders, and post-traumatic stress disorder (PTSD). Discuss any alternative uses with your healthcare provider.

Dosage forms of guanfacine

Guanfacine is available as an oral tablet or extended-release tablet.

It is available under its generic name, guanfacine.

Guanfacine is only available via prescription. You must have a written prescription from a licensed healthcare provider to obtain this medication.