They obviously aren't just for baseball anymore.
Twenty percent of scientists admit to using performance-enhancing prescription drugs for non-medical reasons, according to a survey released Wednesday by Nature, Britain's top science journal.
Ritalin, a trade name for methylphenidate, is a stimulant normally used to treat attention deficit hyperactivity disorder, especially in children. Modafinil -- marketed at Provigil -- is prescribed to treat sleep disorders, but is also effective against general fatigue and jet lag.
Both medications are common currency on college campuses, used as "study aids" to sharpen performance and wakefulness.