How does Effexor affect the brain?

Effexor, or venlafaxine, is a serotonin-norepinephrine reuptake inhibitor (SNRI) that affects the brain by increasing the levels of the neurotransmitters serotonin and norepinephrine. By blocking their reuptake in the synaptic cleft, it enhances mood and alleviates symptoms of depression and anxiety. This modulation of neurotransmitter activity can lead to improved emotional regulation and cognitive function. However, it may also cause side effects, including changes in blood pressure and withdrawal symptoms if discontinued abruptly.