Is melatonin helpful for sleep disorders, and when should it be used?

Reviewed by Yoshinori Abe, MD

Internal Medicine

Melatonin is a hormone that helps regulate the sleep-wake cycle and can be effective for treating certain sleep disorders. It works best in adults over 55 and in people with disrupted circadian rhythms, such as those with jet lag, shift work sleep disorder, or delayed sleep phase syndrome. By signaling to the body that it's time to rest, melatonin can improve sleep onset and overall sleep quality.

If you're struggling with sleep issues, it's important to identify the root cause before choosing a treatment. Take a free, instant, online symptom check to better understand what may be affecting your sleep and get guidance on your next steps.

Reviewed for medical accuracy: 07/20/2026

Important Next Steps

Learn if melatonin is causing your sleep problems Discover likely causes of your sleep trouble See whether your insomnia needs care today Find OTC options for sleep support Find a sleep specialist near you Explore safe home remedies for better sleep Understand if melatonin is affecting your sleep

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Explanation

Melatonin is a hormone that helps regulate sleep and wake cycles. According to the provided references, melatonin can be beneficial for sleep disorders, particularly in older adults.

Use in Older Adults: One study highlights that melatonin is effective in treating insomnia in people aged 55 and older. This is because melatonin production naturally decreases with age, and supplementation can help restore balance.
Circadian Rhythm Disorders: Another study explains that melatonin is useful for people with disrupted sleep patterns, such as those caused by shift work or jet lag. It helps by adjusting the body's internal clock to align with the desired sleep-wake schedule.

While melatonin is generally considered safe, it's important to use it appropriately. It is most effective when taken in the evening, about 30 to 60 minutes before bedtime. However, if you're experiencing persistent sleep issues or other concerning symptoms, you can use a free AI symptom checker to help determine if you should consult with a healthcare provider about whether melatonin or other treatments are suitable for your specific needs.

(References)

Bueno APR, Savi FM, Alves IA, & Bandeira VAC. (2021). Regulatory aspects and evidences of melatonin use for .... Arquivos de neuro-psiquiatria, 34550191.
Lyseng-Williamson KA. (2012). in the treatment of insomnia in patients aged ≥55 years. Drugs & aging, 23044640.
Zhdanova IV, & Tucci V. (2003). Melatonin, Circadian Rhythms, and Sleep. Current treatment options in neurology, 12670411.

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