What are the side effects of Effexor/Venlafaxine?
Common side effects NOTE: The percentage of occurrences for each side effect listed comes from clinical trial data provided by Wyeth Pharmaceuticals Inc. The percentages indicate the percentage of people that experienced the side effect in clinical trials. * Headache (34%) * Nausea (21-35%) * Insomnia (15-23%) * Sexual dysfunction (14-34%) * Dry mouth (12-16%) * Dizziness (11-20%) * Sweating (10-14%) * Decreased Appetite (8-20%) * Abnormal ejaculation (8-16%) * Hypertension (4-5%) * Vivid/Abnormal dreams (3-7%) * Akathisia (Agitation) (3-4%) * Decreased libido (3-9%) * Increased yawning (3-5%) * Apathy * Constipation * Ongoing Irritable Bowel Syndrome * Fatigue * Vertigo * Orthostatic hypotension (postural drop in blood pressure) * Impulsive Actions * Electric shock-like sensations also called “Brain zaps” * Increased anxiety at the start of treatment * Memory Loss * Restless Legs Syndrome Less common to rare side-effects Note ‘Rare’ adverse effects occur in fewer than 1 in 1000 patien
