Mirtazapine Treatment Guidelines
Introduction to Mirtazapine
- Mirtazapine is considered "potent and well tolerated; promotes sleep, appetite, and weight gain" by the American Family Physician 1
Patient Outcomes and Safety
- Mirtazapine promotes sleep, appetite, and weight gain, with lower doses being more effective for these purposes 1
- Low-dose mirtazapine appears to be safe in patients with cardiovascular disease, as it has minimal cardiovascular effects 2
- The therapeutic plasma concentration range for mirtazapine is suggested to be 40-80 ng/mL 3
Dosing and Administration
- The dose-response relationship of mirtazapine has unique characteristics, with lower doses (7.5-15 mg) being more sedating due to stronger antihistaminic effects, and higher doses (30-45 mg) having more noradrenergic and serotonergic effects 3
- The recommended starting dose is 15 mg once daily, with titration up to 45 mg once daily based on response, particularly useful for patients with gastrointestinal symptoms and sleep disturbances 4
- Consider starting at a lower dose (7.5 mg) and titrating more slowly due to potential for increased side effects in certain populations 5
- Lower doses (7.5-15 mg) of mirtazapine are more sedating and effective for promoting sleep, according to the American Family Physician 1