The medicine is an analeptic aimed to treat sleepiness connected with narcolepsy (unexpected sleepiness and drowsiness). Management of quality supervision food and drug administration is also approved for the treatment of sleep disorders associated with shift work shifts. In the first two weeks, the allergies may appear. The use of Modafinil is also popular for non-medical purposes as a relatively safe stimulant.

Phenergan is an antiallergic, topical anesthetic, antihistamine, antipruritic, antiemetic, hypnotic, sedative on the basis of Prometnazine.