Abstract: Insomnia is one of the most frequent health complains. It is defined as the disturbed sleep at night or daytime sleepiness. As per the study of Institute of Medicine, 50-70 million American suffer from acute or chronic sleep disorder and wakefulness. Such problems are the keyhole of different medical and psychiatric conditions. About 30 years ago, those complains are treated with hypnotic medication without proper diagnosis. Homoeopathy can cure the sleep disorder if the similimum is chosen correctly.