Damage to this region, scientists have found, causes excessive sleepiness.
Provigil, Cephalon's best-selling drug, is now approved only for treating excessive sleepiness associated with narcolepsy.
An effort by Cephalon to have the drug approved for a third indication, excessive sleepiness from any cause, was rejected.
Drugs are frequently mentioned, and a recent favorite is Nuvigil, used to treat excessive sleepiness.
But the agency will not approve the drug for excessive sleepiness associated with any sleep disorder, a ruling the company had sought.
Both drugs are approved to treat the excessive sleepiness associated with narcolepsy, sleep apnea and shift work.
It has since been cleared in the US for the treatment of night shift workers with excessive sleepiness.
Candace Steele, a spokesperson, said: "We're exploring its possibilities to treat excessive sleepiness associated with schizophrenia, bipolar depression, traumatic injury and jet lag".
Candace Steele, a spokesperson, said, "We're exploring its possibilities to treat excessive sleepiness associated with schizophrenia, bipolar depression, traumatic injury, and jet lag".
Modafinil, according to drug manufacturers, is used to counter excessive sleepiness because of narcolepsy, shift-work sleep disorder or sleep apnea.
only for "excessive sleepiness associated with narcolepsy" under the Orphan Drug Act, legislation designed to encourage development of medications needed only by small numbers of patients.
