Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 12/29/2025

Melatonin Safety and Its Lack of Effect on Night Eating

Adverse‑Event Profile (American Academy of Sleep Medicine)

  • The 2017 American Academy of Sleep Medicine clinical practice guideline reported no clinically significant difference in the rate of adverse events between melatonin and placebo across a range of doses and treatment durations, indicating a favorable safety profile. 1

Impact on Sleep Parameters and Appetite (American Academy of Sleep Medicine)

  • The 2008 American Academy of Sleep Medicine guideline noted that melatonin produces modest reductions in sleep onset latency, with minimal influence on wake after sleep onset or total sleep time, and explicitly did not identify increased appetite or nocturnal eating as adverse effects. 2

Safety in Older Adults (Praxis Medical Insights)

  • In elderly individuals, melatonin is associated with a low incidence of adverse effects and is not classified as a potentially inappropriate medication, unlike benzodiazepines. 3

Drug‑Interaction and Dose Considerations (Praxis Medical Insights)

  • Caution is recommended when melatonin is co‑prescribed with anticoagulants such as warfarin or in patients with epilepsy because of possible pharmacologic interactions. 5
  • Lower oral doses (approximately 0.3–1 mg) are generally more effective than higher doses, which may lead to next‑morning grogginess due to receptor desensitization. 5

REFERENCES

1

clinical practice guideline for the pharmacologic treatment of chronic insomnia in adults: an american academy of sleep medicine clinical practice guideline. [LINK]

Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine, 2017

2

clinical guideline for the evaluation and management of chronic insomnia in adults. [LINK]

Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine, 2008

3

Melatonin Therapy in Elderly Patients [LINK]

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2025

4

Melatonin Treatment for Sleep Disorders [LINK]

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2026