The first reported evidence of stimulant medication used to treat children with concentration and hyperactivity problems came in 1937. Charles Bradley in Providence, Rhode Island reported that a group of children with behavioral problems improved after being treated with the stimulant Benzedrine. In 1954, the stimulant methylphenidate (Ritalin, which was first produced in 1944) became available; it remains one of the most widely prescribed medications for ADHD. Initially the drug was used to treat narcolepsy, chronic fatigue, depression, and to counter the sedating effects of other medications. The drug began to be used for ADHD in the 1960s and steadily rose in use.