Venlafaxine is a prescription medication used to treat adults with major depressive disorder, panic disorder, and anxiety. It belongs to a class of drugs called serotonin norepinephrine reuptake inhibitors (SNRIs). These work by increasing serotonin and norepinephrine levels, which are natural substances in the brain that help maintain mental balance.

Venlafaxine is available as immediate-release and extended-release tablets. It also comes in extended-release capsule form. The immediate-release tablet is usually taken 2 or 3 times a day with food. Extended-release tablets and capsules are taken once a day with food.

Common side effects of venlafaxine include dry mouth, insomnia, loss of appetite, and dizziness. Do not drive or operate heavy machinery until you know how venlafaxine will affect you.