Adverse effects
Possible side effects:
- nausea - occurs in approximately 1/3 of patients, particularly in the early stages of treatment
- somnolence, dizziness, dry mouth and insomnia are relatively common
- an increase in blood pressure was seen in clinical trials in patients treated with venlafaxine - this most often occurred with doses above 200 mg venlafaxine per day (1)
- thrombocytopaenia - extremetly rare - has been described as a possible association by the UK Committee in Safety of Medicines - in the cases reviewed it is difficult to ascribe causality to treatment with venlafaxine with any certainty (1)
Reference:
- Prescribers' Journal (1999), 39 (4), 243-247.
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