Effexor is a prescription antidepressant drug that readjusts the levels of certain neurotransmitters in the brain. Effexor is commonly prescribed to treat depression, general anxiety and social anxiety disorders. When used as directed, Effexor is typically safe and has few side effects. Certain patients, particularly those with major depressive disorder as well as those younger than 18 years old should be monitored for potential side effects of Effexor use.
Sexual Dysfunction
Effexor can have a negative impact on almost every aspect of sex in both men and women. According to drug safety information reproduced by Drugs.com, about 13 percent of Effexor users will experience decreased libido. Women using Effexor may experience problems achieving orgasm. About 16 percent of males Effexor users will have ejaculatory complications.
Higher Blood Pressure
MayoClinic.com lists high blood pressure as a common side effect of Effexor. While this side effect is common, it should be reported to a physician as soon as possible, particularly if the patient also experiences chest pains or irregular heart beat. Drugs.com reports that the blood pressure raising effects of Effexor are dose dependent and more likely to occur above a 300 mg/day dosage.
Suicidal Tendencies
An alert from the Federal Drug Administration listed by the National Alliance on Mental Illness warns that Effexor use may increase thoughts of suicide or suicidal behaviors. These effects become particularly pronounced in patients with major depressive disorder as well as in children, adolescents and young adults. Parents of young Effexor users should note any increased anxiety or aggressive behaviors and report any other unusual changes in behavior to the patient's physician. Parents should note that increased suicidal risks may persist well after discontinuing Effexor use.
Nausea and Upset Stomach
Common side effects of Effexor include nausea and vomiting, which effects up to 35 percent of Effexor users, says Drugs.com. About 23 percent of people using Effexor may also experience loss of appetite or anorexia. Diarrhea, upset stomach, abdominal pain and excess gas can also occur with Effexor use.
Anxiety
Increased anxiety proves another side effect of Effexor, according to the Physician's Desk Reference at PDRHealth.com. Drugs.com explains that between 10 and 20 percent of individuals using Effexor will experience anxiety-related side effects including nervousness, agitation, tremors, twitching, delirium and unusual dreams. Many patients have also reported dizziness as a side effect of Effexor use.
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