Ramelteon is a sleep-regulating drug used to treat insomnia, particularly difficulty falling asleep, by mimicking melatonin and selectively binding to MT₁ and MT₂ receptors in the brain, which helps control the sleep–wake cycle without causing significant dependence or withdrawal like traditional sedatives. Developed in the 1990s as a non-benzodiazepine alternative, it was approved by the FDA in 2005 as the first melatonin receptor agonist, offering a safer and more targeted approach to insomnia by acting on the body’s natural sleep pathways rather than broadly depressing the central nervous system.
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