Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

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

Last Updated: 9/13/2025

Optimal Dose of Mirtazapine for Sleep

Dosing Considerations

  • Mirtazapine is used off-label for insomnia at lower doses than those used for depression, according to the American Academy of Sleep Medicine 1, 2

Evidence for Efficacy

  • The American Academy of Sleep Medicine suggests that mirtazapine has been shown to improve sleep quality and duration when used at low doses 1

Clinical Considerations

  • Administration of mirtazapine on an empty stomach is advised to maximize effectiveness, as recommended by the American Academy of Sleep Medicine 1
  • Mirtazapine has potential advantages over benzodiazepines and Z-drugs, including being a non-scheduled medication, according to the American Academy of Sleep Medicine 1

Important Precautions

  • The American Academy of Sleep Medicine notes that mirtazapine is not FDA-approved specifically for insomnia treatment 1, 3
  • Caution is advised in elderly patients, who may require lower doses, as recommended by the American Academy of Sleep Medicine 1

Alternative Options for Insomnia

  • The American Academy of Sleep Medicine suggests the following FDA-approved medications for insomnia: Eszopiclone (2-3 mg), Zolpidem (10 mg), Doxepin (3-6 mg), Suvorexant (10-20 mg), and Ramelteon (8 mg) 3, 4

REFERENCES

1

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

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

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

4

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