Melatonin receptor agonists are medications that mimic the action of melatonin, a hormone produced by the body that regulates sleep-wake cycles. These drugs bind to melatonin receptors in the brain, promoting sleep and helping to manage sleep disorders such as insomnia. They are often used to improve sleep quality and reduce the time it takes to fall asleep. Common examples of melatonin receptor agonists include ramelteon and tasimelteon. These medications are generally considered safe and effective for short-term use, but they may have side effects such as dizziness or daytime drowsiness. Always consult a healthcare professional before starting any new medication.