BOSTON, June 18 (Reuters) - After multiple stops and starts, biotechnology company Cephalon Inc. has won U.S. approval for its drug to treat excessive sleepiness in patients with conditions such as ...

Modafinil is a drug used to treat wakefulness disorders like narcolepsy, shift work sleep disorder and daytime sleepiness caused by obstructive sleep apnea. Modafinil is usually prescribed at mg to be ...