Venlafaxine is an SSNRI drug, with other drugs like desveblafaxine (Pristiq), duloxetine (Cymbalta), and milnacipran (Savella) forming the class. Venlafaxine affects the neurotransmitters in the brain that release chemicals to boost communication between the nerves. Neurotransmitters will either travel via space between nerves and will attach to receptors of the nerve surface, or they will attach to the nerves on the receptors from which they are produced and are then released only to be taken up again. In simpler words, when Venlafaxine starts to become active in the body, it will regulate the flow of chemicals in the brain, which alleviate anxiety, depression, and other similar conditions that can affect the psychological health of a person.