 It has been prescribed in France since 1994 under the name Modiodal, and in the US since 1998 as Provigil.In 1998, modafinil was approved by the U.S. Food and Drug Administration for the treatment of narcolepsy and in 2003 for shift work sleep disorder and obstructive sleep apnea/hypopnea even though caffeine and amphetamine were shown to be more wakefulness promoting on the Stanford Sleepiness Test Score than modafinil.It was approved for use in the UK in December 2002.