Venlafaxine Dosing After Missed Doses
General Guidelines
- The American Gastroenterological Association suggests that if more than 2 consecutive doses of venlafaxine are missed, consider resuming at the same dose if the patient previously tolerated it well; otherwise, lower the next dose, with a strength of evidence based on clinical judgment 1
- If 3 or more consecutive doses are missed, the American Gastroenterological Association recommends restarting the titration schedule from the lowest dose to minimize risk of adverse effects while re-establishing therapeutic levels 1
Formulation-Specific Considerations
- The American Academy of Child and Adolescent Psychiatry notes that immediate-release venlafaxine requires twice- or thrice-daily dosing due to its short half-life, making it more vulnerable to discontinuation symptoms with missed doses 2
- The American Academy of Child and Adolescent Psychiatry also states that extended-release venlafaxine permits once-daily dosing with a longer elimination half-life, but still requires slow discontinuation taper when stopping 2