Guanfacine 2mg MR Tablets in Pakistan – ADHD Treatment Guanfacine 2mg MR (Modified Release) Tablets are prescription medicines commonly used to treat ADHD (Attention Deficit Hyperactivity Disorder) in children, adolescents, and adults. Guanfacine works by affecting brain receptors that help improve attention, focus, impulse control, and emotional regulation. The modified-release formula provides steady, long-lasting effects throughout the day.