The same treatments used for kids with ADHD also treat adults. For most adults , long-acting stimulants -- such as Adderall XR, Concerta.
If you're an adult, most of the long-term worry about ADHD meds has to do with the how they affect other conditions you have. Your doctor will.
Also, a dose of Adderall is typically longer lasting than a dose of Ritalin. Adderall is FDA-approved for children, adolescents, and adults with ADHD to help them.