Guanfacine reduces nerve impulses in your heart and blood vessels. Guanfacine works by relaxing blood vessels, which lowers blood pressure and improves blood flow.
The Tenex brand of guanfacine is used to treat high blood pressure (hypertension). It is sometimes given with other blood pressure medications.
The Intuniv brand of guanfacine is used to treat attention deficit hyperactivity disorder (ADHD).
Guanfacine may also be used for purposes not listed in this medication guide.
