Almost one-third of the population in the U.K. resort to sleeping pills to attain a serene rest at night. These pills are also known as tranquillizers or sedative-hypnotics. They relax the brain and central nervous system and induce slumber in insomniacs. These medications are also used for anxiety disorder treatment, pain relief, alcohol withdrawal symptoms, muscle spasms and seizures. Studies have shown that insomniacs, who consume over the counter sleep medications after consulting a physician, doze of easily and sleep for a longer duration than those who don’t use them.