The most popular theory is that valproic acid exerts its effects by increasing the concentration of gamma-aminobutyric acid (GABA) in the brain. GABA is a neurotransmitter, a chemical that nerves use to communicate with one another. The FDA approved valproic acid in February, 1978 and divalproex in March 1983. PRESCRIBED FOR: Valproic acid is used for the treatment of seizures, bipolar disorder, and prevention of migraines. Medically Reviewed by a Doctor on 9/15/2015. Report Problems to the Food and Drug Administration. You are encouraged to report negative side effects of prescription drugs to the FDA.
A nerve block is the injection of numbing medication (local anesthetic) near specific nerves to decrease your pain in a certain part of your body during and after surgery.
Lumbar Sympathetic Nerve Block. What is a lumbar sympathetic nerve block? The sympathetic nerves are a group of nerves found along the front side of the spinal column. They are part of the autonomic nervous system and control many bodily functions including sweating, heart rate, digestion, and blood pressure.