These drugs work by altering the levels of serotonin and norepinephrine in the brain, which can help regulate the sleep-wake cycle. In addition to these drugs, melatonin is another physiological treatment that can be used to treat sleep disorders. Melatonin is a hormone that is naturally produced by the body to regulate the sleep-wake cycle. Supplemental melatonin is available in pill form and can be used to treat jet lag, shift work sleep disorder, and other sleep disorders. It's important to note that while physiological treatment drugs can be effective in treating sleep disorders, they also come with potential side...