How old is ritalin (methylphenidate) ?

Ritalin (methylphenidate) history: The original patent was owned by ciba, now novartis corporation. It was first licensed by the U.S. Food and drug administration (fda) in 1955 for treating what was then known as hyperactivity. Prescribed to patients beginning in 1960, the drug became heavily prescribed in the 1990s, when the diagnosis of adhd itself became more widely accepted. En.Wikipedia.Org/wiki/methylphenidate.

Age of Ritalin!: Methylphenidate (the active ingredient in ritalin) was patented in 1954. In 1967, after several years of expiration of the patent, ritalin- the brand-name version of methylphenidate- was manufactured by ciba pharmaceutical for use in treating adhd in children. Name brand Ritalin is now manufactured by novartis. Ritalin is short acting, works for about 4 hours. Now longer acting form is available.

Ritalin (methylphenidate): By 1950 it was used for another disorder unrelated to ADHD, & the first use for ADHD was in 1980.