Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

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

Last Updated: 9/11/2025

Managing Appetite Loss in Patients with Depression

First-Line Approach: Mirtazapine

  • Mirtazapine is effective for patients with concurrent depression and appetite loss, making it an ideal choice for this specific population, with a recommended dose of 7.5-30 mg at bedtime 1
  • In a small retrospective study of patients with dementia, mirtazapine at 30 mg daily resulted in a mean weight gain of 1.9 kg after three months and 2.1 kg after six months, with about 80% of patients experiencing weight gain 3

Alternative Options When Mirtazapine Is Not Suitable

  • Bupropion is the only antidepressant consistently shown to promote weight loss, making it unsuitable for patients with appetite loss, according to the American Gastroenterological Association 4
  • Paroxetine and amitriptyline are associated with a greater risk for weight gain compared to other antidepressants in their respective classes, as reported by the American Gastroenterological Association 4

Pharmacological Appetite Stimulants

  • Megestrol acetate (400-800 mg/day) is recommended as an effective pharmacological appetite stimulant, with improvement in appetite in approximately 25% of patients, according to the Praxis Medical Insights guidelines 1, 2
  • Dexamethasone (2-8 mg/day) offers a faster onset of action, making it suitable for patients with shorter life expectancy, as recommended by the Praxis Medical Insights guidelines 1, 2
  • Olanzapine (5 mg/day) may be considered for patients with concurrent nausea/vomiting, according to the Praxis Medical Insights guidelines 1

Non-Pharmacological Approaches

  • Provide emotional support during meals and ensure adequate feeding assistance, as recommended by the Praxis Medical Insights guidelines 2
  • Serve energy-dense meals to help patients meet nutritional requirements without increasing meal volume, according to the Praxis Medical Insights guidelines 1
  • Offer oral nutritional supplements when food intake is between 50-75% of usual intake, as recommended by the Praxis Medical Insights guidelines 1
  • Protein-enriched foods and drinks can improve protein intake in patients with poor appetite, according to the Praxis Medical Insights guidelines 1

Special Considerations

  • Lower starting doses should be used for elderly patients with close monitoring for side effects, as recommended by the Praxis Medical Insights guidelines 2

REFERENCES

1

Effective Appetite Stimulants for Hospitalized Patients [LINK]

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2025

4

Alternative Appetite Stimulants When Mirtazapine Cannot Be Tolerated [LINK]

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2025