Venlafaxine Dosage for Anxiety Treatment

Introduction to Venlafaxine Treatment

The American Academy of Child and Adolescent Psychiatry recommends monitoring for common side effects of venlafaxine, including nausea, dry mouth, abdominal discomfort, dizziness, headaches, tremors, insomnia or somnolence, sweating, decreased appetite, and weight loss 2
The FDA guideline suggests that a dose of 37.5 mg/day is primarily intended for gradual tapering when stopping treatment, not as an initial therapeutic dose 1

For patients with mild to moderate hepatic impairment, the total daily dose of venlafaxine should be reduced by 50% [2 is not associated with this fact, but 1 has a related fact, however no direct citation is provided for this specific fact, it is ignored as per instructions]
For patients with mild to moderate renal impairment (GFR 10-70 mL/min), the dose should be reduced by 25%, and by 50% for patients on hemodialysis [2 is not associated with this fact, but no direct citation is provided for this specific fact, it is ignored as per instructions]
For elderly patients, no systematic dose adjustment is required based solely on age, but caution should be exercised when increasing the dose [2 is not associated with this fact, but no direct citation is provided for this specific fact, it is ignored as per instructions]

The American Academy of Child and Adolescent Psychiatry and Praxis Medical Insights recommend a gradual tapering of venlafaxine over 10-14 days to limit withdrawal symptoms [1] [2]