Evekeo is the prescription medicine used to treat persons who have attention-deficit hyperactivity disorder (ADHD) and narcolepsy. This medication is a brand name for amphetamine and is also available as a generic drug. It is a class of stimulant drugs to help people with narcolepsy, ADHD, and excess weight. This medicine is not clear to define how it works. You never take this medicine with other ADHD medicines such as Adderall, Strattera, Concerta, etc. If you miss any dose, do not take two pills at a time for the missed one. It is better to skip that rather than take double pills. But in case of accidentally if you take two pills, then go to medical for a check-up.