If you have or think you have insomnia, you should chat with your doctor about melatonin as a potential treatment. Some major health agencies advise against using melatonin to treat insomnia and instead advocate for cognitive behavioral therapy or another drug-free intervention.  Your doctor may want you to try lifestyle modifications first, such as increasing your daily exercise, changing your eating habits or reducing alcohol consumption. Your provider will also want to rule out other conditions that can coexist with insomnia, such as anxiety or depression. Sometimes, when drug-free interventions don't suffice, prescription medication is needed to treat insomnia.