As with all medications, side effects are possible when taking Effexor XR (venlafaxine). Common side effects of Effexor XR include dizziness, sleepiness, a dry mouth, loss of appetite, nausea, constipation, insomnia, nervousness, sweating, weakness, and sexual side effects of delayed ejaculation in men and decreased sexual desire. Some individuals may experience increased blood pressure or cholesterol, or an increase or decrease in body weight.
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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.