Non Prescription ADHD Medication The drugs for ADHD can help improve concentration, decrease hyperactivity, and impulsive behavior. However, adhd medication uk do not work for everyone. They also have adverse effects and carry a risk of addiction. Non-stimulant alternatives include clonidine (Catapres, Kapvay), Atomoxetine (Strattera) and Guanfacine (Intuniv). These are