Ritalin

In several Mexican cities, about half a dozen samples of methylphenidate — commonly known in the U.S. by the brand names Ritalin and Concerta — did not reveal abnormalities.

Over three separate sessions, participants received either a small dose of a placebo or of the stimulant drug methylphenidate, commonly known as Ritalin, orally or intravenously.

As providers turn to alternative treatments, other drugs like Ritalin or Concerta, are becoming harder to find, too.

For some children, methylphenidate, commonly known by the brand name Ritalin, is the best option.

In college, she wrote her thesis over four uninterrupted days and nights, fueled by a friend's Ritalin.