Mirtazapine Dose Increase and Insomnia Risk

Clinical Evidence and Recommendations

• The National Comprehensive Cancer Network recommends mirtazapine as particularly effective for patients with both depression and insomnia, without dose-specific restrictions for sleep benefits 1, 2
• The American College of Physicians recommends assessing therapeutic response within 1-2 weeks of any treatment modification 1
• Exercise caution in patients with obstructive sleep apnea, as mirtazapine may worsen this condition regardless of dose 3, 2
• If insomnia does emerge after dose increase, consider alternative explanations, such as inadequate treatment of underlying depression, which commonly causes insomnia 3
• Concurrent medication changes or worsening of sleep apnea if present should also be considered as alternative explanations for insomnia emergence 4, 3