Concerta is used to treat attention deficit disorder (ADD) and attention deficit hyperactivity disorder (ADHD). Learn about side effects, interactions and indications. Metadate CD is similar to Concerta in that you get an initial lower dose. Metadate CD is made up of immediate release beads that give 30% of the dose right away and then the other 70% of the dose is continuously released from extended release beads. What to Expect From CONCERTA ® Adults with ADHD are typically started on a daily dose of 18 or 36 mg of CONCERTA ®. But like many treatments for ADHD in adults, your dose may need to be adjusted to achieve better results. Many think Concerta (methylphenidate) is safe, or mild, because so many children use it. However, the government classifies the psychoactive drug with cocaine and morphine because it is highly addictive. WARNING: DRUG DEPENDENCE. Concerta ® should be given cautiously to patients with a history of drug dependence or alcoholism. Chronic abusive use can lead to marked tolerance and psychological dependence with varying degrees of abnormal behavior. Information on the drug methylphenidate (Ritalin, Ritalin SR, Ritalin LA, Concerta, Methylin, Methylin ER, Daytrana, Quillivant XR Metadate CD, Metadate ER) prescribed for the treatment of ADHD and Narcolepsy. Side effects and dosing information is included. Follow all directions on your prescription label and read all medication guides or instruction sheets. Your doctor may occasionally change your dose. Find a comprehensive guide to possible side effects including common and rare side effects when taking Concerta (Methylphenidate Extended-Release Tablets) for healthcare professionals and consumers. Stimulants Concerta: Frequently Asked ADHD Medication Questions. Concerta is a popular stimulant medication primarily used to treat ADHD in adults and children ages 6 and up. Concerta XL 18 mg prolonged-release tablets. - Summary of Product Characteristics (SmPC) by Janssen-Cilag Ltd.