This medication is used to treat attention deficit hyperactivity disorder, or ADHD, in patients older than 6 years of age, as part of a total treatment plan including psychological, educational, and social measures. Unlike other drugs used to treat ADHD, guanfacine is not a stimulant. The exact way that guanfacine works to treat ADHD is unknown. Guanfacine is thought to affect receptors in the parts of the brain that lead to strengthening working memory, reducing distraction, and improving attention and impulse control. Guanfacine may help lessen ADHD symptoms such as being disruptive, inattentive, hyperactive, impulsive, and arguing with adults or losing one's temper.
How To Use
Read the Patient Information Leaflet provided by your pharmacist before you start using guanfacine and each time you get a refill. If you have any questions, consult your doctor or pharmacist.
Take this medication by mouth usually once daily or as directed by your doctor. Do not take this medication with a high-fat meal. Doing so may increase the amount of drug you absorb, leading to increased side effects. Do not crush or chew extended-release tablets. Doing so can release all of the drug at once, increasing the risk of side effects. Also, do not split the tablets unless they have a score line and your doctor or pharmacist tells you to do so. Swallow the whole or split tablet without crushing or chewing.
Do not switch between different forms of this medication without talking with your doctor, because different forms of this medication may not provide the same amount of guanfacine.
Use this medication exactly as prescribed. Dosage is based on your medical condition and response to treatment. To reduce the risks of side effects (such as low blood pressure, slow heart rate, drowsiness), your doctor may start you at a low dose and gradually increase your dose. Follow your doctor's instructions carefully. Do not take more or less medication or take it more frequently than prescribed. Your condition will not improve any faster and your risks of side effects will increase. Use this medication regularly to get the most benefit from it. To help you remember, take it at the same time each day.
Do not suddenly stop taking this medication without consulting your doctor. Your condition may become worse when the drug is suddenly stopped. Your dose may need to be gradually decreased.
Tell your doctor if your condition persists or worsens.