Focalin (Dexmethylphenidate), is a norepinephrine-dopamine reuptake inhibitor used in the treatment of Attention Deficit Hyperactivity Disorder (ADHD). Focalin is used in patients who are aged six years and above and should be part of the entire treatment program for ADHD that may entail counseling among other therapies. Focalin should be used as directed by the physician. Focalin, which is also known as dexmethylphenidate, is a mild stimulant to the central nervous system. Focalin works by affecting chemicals in the brain that contributes to hyperactivity and also impulse control. Focalin is a drug is used for treating Attention Deficit Hyperactivity Disorder (ADHD). Focalin is classified under a class of drugs that are known as CNS Stimulants. Contact your doctor immediately if there is any case of an overdose. If you miss a dose of Focalin, take it as soon as you remember. Do not take a double dose to make up for a missed dose. Seek advice from your doctor on suitable over the counter drugs and home remedies to take together with Focalin.