What is the standard dosage of Guanfacine?

Guanfacine is a drug commonly used to treat attention deficit hyperactivity disorder (ADHD) and high blood pressure. It helps improve concentration and impulse control in ADHD patients by acting on the brain's α2 receptors, while also regulating blood pressure levels. The dosage of guanfacine varies based on the patient's age, weight, and condition.

For children and adolescents under 18 years of age, the dosage of guanfacine is mainly adjusted based on body weight. For patients weighing more than 50 kg, treatment usually starts with 2 mg once a day and gradually increases the dose. After an interval of at least one week, the dose can be continued to increase each time. Each increase is generally 1 mg until the maximum dose of 4-6 mg once a day is reached. Maintenance dose. For patients weighing less than 50 kg, the usual starting dose is 1 mg once daily, and the dose is gradually adjusted to achieve the best therapeutic effect.

For patients 18 years of age and older, the recommended starting dose is generally 2 mg once daily, with dose increases of 1 mg at least one week apart at each adjustment. During treatment, the patient's dose can be gradually increased until the maintenance dose is 4-6 mg daily, and the maximum dose is 6 mg once daily.

During medication, special attention needs to be paid to dosage adjustment. The dose of guanfacine should be increased gradually, with small increments each time, and the effect needs to be observed for at least one week after each adjustment. Increasing the dose too quickly may increase the risk of side effects without effectively improving treatment effectiveness, so gradual dose adjustments are crucial to ensure the safety and efficacy of the drug.

The therapeutic goal of guanfacine is to help patients improve attention and control impulsive behavior, especially in ADHD patients, it can help enhance concentration, reduce inappropriate behavior, and improve quality of life. Because guanfacine works by affecting the nervous system, dosage adjustments need to be made under the guidance of a doctor to ensure the effectiveness of the treatment.

Reference materials:https://go.drugbank.com/drugs/DB01018