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.
Do not take venlafaxine together with desvenlafaxine (Pristiq). To make sure you can safely take venlafaxine, tell your doctor if you have other medical conditions, especially: 1  bipolar disorder (manic depression); 2  cirrhosis or other liver disease; 3  kidney disease; 4  high blood pressure; 5  glaucoma;6  seizures or epilepsy; 7  a bleeding or blood clotting disorder; 8  high cholesterol; 9  low levels of sodium in your blood; or.o not take venlafaxine together with desvenlafaxine (Pristiq). To make sure you can safely take venlafaxine, tell your doctor if you have other medical conditions, especially: 1  bipolar disorder (manic depression); 2  cirrhosis or other liver disease; 3  kidney disease; 4  high blood pressure; 5  glaucoma;