Ritalin is a slightly less common, but equally dangerous relative of the drug Adderall. Teens abuse it as a study aid drug to get an edge when writing papers and cramming for tests. It’s most commonly prescribed for teens with ADHD. Most teens get their Ritalin from siblings, classmates, or from their doctors after faking the symptoms of ADHD. A 2013 report revealed that 5 million students in the U.S. have abused Ritalin or Adderall, a 33% increase from 2008.