<prompt> tafsiri zifuatazo kutoka kwa swahili hadi kiingereza.modafinil, ambayo imeagizwa nchini marekani tangu 1998 kutibu hali za kulala usingizi kama vile kuambukizwa na kulala, huongeza uangalifu kama vile caffeine inavyofanya.  <response>: modafinil, which has actually been recommended in the united states because 1998 to deal with sleep-related conditions such as narcolepsy and sleep apnea, increases awareness much as caffeine does. 