compensatory mechanisms are ineffective to maintain blood pressure & tissue perfusion. renin causes vasoconstriction & tissue hypoxia. brain & heart are protected by lipids being used as energy by the heart and glycogen transformed to glucose to be used by the brain.
A: The side effects of Effexor (venlafaxine) are similar to those of other antidepressants. Patients typically notice side effects when they're first starting Effexor, especially in the first two weeks of treatment. But they usually develop a tolerance for the drug, and the side effect symptoms improve.
Venlafaxine (venlafaxine, Effexor XR [Effexor has been discontinued in the US]) is a drug in the class of drugs called SNRIs (serotonin and norepinephrine reuptake inhibitors) prescribed for the treatment of depression, depression with symptoms of anxiety, generalized anxiety disorder.