Melatonin Therapy in Elderly Patients

Dosing and Efficacy

• The American Academy of Sleep Medicine recommends starting with a low dose of 1-2 mg immediate-release melatonin for elderly patients, as lower doses help mimic normal physiological circadian rhythm while avoiding prolonged, supra-physiological blood levels 1
• For sleep onset insomnia specifically in elderly patients (65-80 years), 2 mg of prolonged-release melatonin has shown significant reduction in sleep latency compared to placebo 1
• The dose may be titrated up in 1-3 mg increments based on response, but generally should be kept at the lowest effective dose 2

Safety and Considerations

• Melatonin has a favorable safety profile in elderly patients with minimal adverse effects reported 3
• No clinically significant differences in adverse events between melatonin and placebo have been observed across various dosages and durations 3
• Unlike benzodiazepines, melatonin is not listed on the American Geriatrics Society Beers Criteria list of potentially inappropriate medications in older adults 2

Monitoring and Follow-up

• If no improvement is seen with 2 mg after 3 weeks, consider increasing the dose in 1-3 mg increments up to a maximum of 5 mg 1
• If sleep problems persist despite adequate melatonin trial, consider alternative treatments or additional evaluation for other sleep disorders 4