The E 505 Pill is a prescription medication that contains Amphetamine and Dextroamphetamine in a 20 mg dose. It is manufactured and marketed by the Lannett Company, Inc. The pill is oval and has a peach color. It is commonly used to treat attention deficit hyperactivity disorder (ADHD) and narcolepsy. Amphetamine and Dextroamphetamine are central nervous system stimulants that work by increasing levels of dopamine and norepinephrine in the brain. This helps to improve focus, attention, and alertness in individuals with ADHD. For people with narcolepsy, the medication helps to reduce daytime sleepiness and improve wakefulness.