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Withdrawal reactions associated with venlafaxine
1University of New South Wales, Sydney, Australia.
The Australian and New Zealand Journal of Psychiatry
|May 20, 1998
Summary
Venlafaxine discontinuation can cause severe withdrawal symptoms, even after missing one dose. These reactions, including headache and nausea, may make stopping the medication extremely difficult.
Area of Science:
- Pharmacology
- Clinical Medicine
Background:
- Venlafaxine is a serotonin-norepinephrine reuptake inhibitor (SNRI) used to treat depression and anxiety disorders.
- Discontinuation syndromes are known adverse effects associated with abrupt cessation of antidepressant medications.
Observation:
- Two patients experienced severe discontinuation symptoms during venlafaxine withdrawal, including one who had hallucinations during a slow taper.
- One patient reported significant withdrawal responses after missing a single dose of venlafaxine.
Findings:
- Abrupt and tapered withdrawal of venlafaxine can lead to severe discontinuation syndromes.
- Common symptoms include headache, nausea, fatigue, dizziness, and dysphoria.
- Withdrawal symptoms may occur even after missing a single dose, highlighting the drug's short half-life.
Implications:
- Clinicians should be aware of the potential for severe venlafaxine discontinuation reactions.
- Strategies for managing venlafaxine withdrawal need to be considered to facilitate safe cessation.
- Patient education regarding potential withdrawal symptoms is crucial for adherence and management.