For instance, AstraZeneca's (nyse: AZN - news - people ) Seroquel is often used for its sleep-promoting or calming effect. (see: " Antipsychotic Prescribed as Sleeping Pill") Eli Lilly 's (nyse: LLY - news - people ) Zyprexa has even been used in rare cases in patients with anorexia--one of the drug's potential side effects is weight gain.

FORBES: When Doctors Go Off-Label

In another experiment the researchers wake up sleeping mice by sending a light signal to the hypothalamus, the brain's controller of sleep-wake cycles.

FORBES: Magazine Article