Are you tired of high medication costs? Our service offers unbeatable savings on your guanfacine prescription medication. We provide a range of solutions to help you save up to 100% on your medication costs*. Whether you are insured, uninsured, underinsured, or simply looking to reduce your out-of-pocket expenses, we've got you covered.

Manufactured by various FDA-approved generic manufacturers.

*You can pay as little as $0 per fill using Drug Coupons or Patient Assistance Programs. Subject to applicability & eligibility requirements.

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guanfacine Uses, Side Effects, Interactions, Warnings & Dosing

What dosages is guanfacine available in?

What dosages is guanfacine available in?

guanfacine is available as a 1 mg and 2 mg oral tablet.

What is guanfacine used for?

What is guanfacine used for?

guanfacine is an alpha-2 adrenergic receptor agonist and is used to treat high blood pressure in people ages 12 years and older.

How does guanfacine work?

How does guanfacine work?

guanfacine is an alpha-2 agonist. It works by binding (attaching) to alpha-2 receptors in the brain. This lowers the amount of norepinephrine, a chemical that normally raises your blood pressure by squeezing your blood vessels.

How do I take guanfacine?

How do I take guanfacine?

guanfacine is typically dosed as 1 mg by mouth once a day at bedtime. If needed, your provider might raise your dose after 3 to 4 weeks. The maximum recommended dose is 2 mg once day.

Is it safe for me to take guanfacine?

Is it safe for me to take guanfacine?

guanfacine is a safe and effective treatment when used for FDA licensed indications. However, like all medications, they may give you unwanted side effects. You should always discuss potential side effects with your physician to ensure the medication is suitable and right for you. You should not use this medication if you have hypersensitivity to guanfacine, its inactive ingredients, or other products containing guanfacine.

guanfacine Common Side Effects

guanfacine Common Side Effects

Common side effects of guanfacine include:

  • Dry mouth
  • Sleepiness
  • Dizziness
  • Constipation
  • Headache
  • Weakness
  • Tiredness
guanfacine Serious Side Effects

guanfacine Serious Side Effects

Serious side effects are rare with guanfacine. Contact your healthcare provider immediately if you experience any of the following.

  • Severely low blood pressure: lightheadedness, dizziness, feeling faint, tiredness, confusion
Effects of other drugs, drug classes and over-the-counter products on guanfacine

Effects of other drugs, drug classes and over-the-counter products on guanfacine

The following medications may interact with guanfacine:

  • Strong CYP3A4 inhibitors (e.g., ketoconazole): Coadministration increases the levels and effects of guanfacine
  • Strong CYP3A4 inducers (e.g., rifampin): Coadministration decreases the levels and effects of guanfacine
Who makes guanfacine?

Who makes guanfacine?

Various FDA-approved generic manufacturers

Is guanfacine safe in pregnancy?

Is guanfacine safe in pregnancy?

It is not known if guanfacine will harm your unborn baby. You should talk to your healthcare provider before taking this medication if you are pregnant.


What to do if you missed your guanfacine dose

The FDA's medical product safety reporting program for health professionals, patients and consumers.

Learn more about reporting side effects
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Medical Disclaimer

NowPatient has taken all reasonable steps to ensure that all material is factually accurate, complete, and current. However, the knowledge and experience of a qualified healthcare professional should always be sought after instead of using the information on this page. Before taking any drug, you should always speak to your doctor or another qualified healthcare provider.

The information provided here about medications is subject to change and is not meant to include all uses, precautions, warnings, directions, drug interactions, allergic reactions, or negative effects. The absence of warnings or other information for a particular medication does not imply that the medication or medication combination is appropriate for all patients or for all possible purposes.

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