Effexor (Venlafaxine): Side Effects, Risks & Warnings

Effexor is the brand name for the antidepressant medication venlafaxine. In the United States and most other countries, Effexor is only legally available under a doctor's prescription. Like any other medication, Effexor does hold the risk of adverse side effects.

Suicidal Thoughts

• Effexor may increase the risk of suicide, especially among teens and adults under 24 years old, according to MedlinePlus.

Other Psychological Issues

• Effexor can also create delusions such as hearing voices or seeing things that do not exist (medically known as hallucinating) in some patients.

Allergic Reaction

• Adverse effects of Effexor can include allergic reaction, which is usually characterized by hives, itching, and difficulty breathing.

Other Serious Effects

• Other possible adverse Effexor side effects, which constitute a medical emergency, include chest pain, fast heartbeat, fever, and coordination problems.

Minor Adverse Effects

• Minor and more common adverse side effects can happen when taking Effexor, such as appetite loss, dry mouth, and decreased sexual desire.