What special precautions should I follow?
Before taking Guanfacine:
Tell your doctor if you have any type of heart disease, had a heart attack, stroke, kidney disease, or liver disease. You may need a lower dose or special monitoring during treatment with guanfacine if you have any of the conditions listed above.
Moreover, do not take other drugs such as sleeping pills, prescription pain relievers, antihistamines, or antidepressants without first talking to your doctor. These medicines may increase the drowsiness caused by guanfacine. You should also inform your doctor or pharmacist about any other prescription or over-the-counter medications you are taking.
Guanfacine is in the FDA pregnancy category B. This means that it is unlikely to harm an unborn baby. Furthermore, it is not known whether guanfacine passes into breast milk and how it might affect a nursing infant. Do not take this medicine without first talking to your doctor if you are pregnant or breast-feeding a baby.
If you are over 60 years of age, you may be more likely to experience side effects from guanfacine therapy. You may require a lower dose.
The FDA has not approved guanfacine for use by children younger than 12 years of age.
Use cautiously when driving, operating machinery, or performing other hazardous activities. Guanfacine may cause dizziness or drowsiness. If you experience dizziness or drowsiness, avoid these activities.
Additionally, try to avoid alcohol while taking guanfacine, as it may increase the drowsiness you experience from guanfacine therapy and may also increase dizziness.
Why is this medication prescribed?
Dosage and using this medicine
What should I do if I forget a dose?
What side effects can this medication cause?