Guanfacine has been shown to cause some side effects. If these reactions do not go away within a few days or become severe, talk to your health care provider.
Common side effects reported while taking guanfacine include:
- Fatigue and weakness
If you experience blurry vision, hives, fainting, skin rash, or a dramatically slowed heart rate while taking guanfacine, seek medical attention immediately.
As with all prescription medication, be sure to inform the prescribing doctor about any medical conditions you have been previously diagnosed with, as well as any medication/ supplements you are currently taking before starting treatment with guanfacine. Guanfacine can interact with other forms of medication and substances, causing potentially serious side effects. Before starting treatment with guanfacine, let your doctor know if you are pregnant or plan on becoming pregnant.