Nicorandil belongs to a class of drugs called 'sedative-hypnotics' primarily used in the short-term treatment of insomnia. Insomnia is a disorder of sleep that causes difficulty in falling asleep or staying asleep. It may be acute (short-term) or chronic (long-term) in nature due to various complications like stress, anxiety, and breathing problems. Nicorandil contains Zolpidem which works by increasing the activity of GABA, which is a chemical messenger in the brain acting as a natural nerve-calming agent, thereby inducing sleep. Thus, Nicorandil relaxes muscles, reduces anxiety, and helps to fall asleep.