Treating day time drowsiness is all about healing a normal person. Provigil is far beyond this. This is a drug which is meant for the treatment of sleep apnea and narcolepsy as well. These diseases are the root cause of this drug. It acts with the neurotransmitters which are present in a person’s brain and play a kind of havoc in the systems of the same person. It activates them and makes them work properly.