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.
Like general anesthesia, nerve blocks involve some minor risks. The risk of infection is very low as the procedure is done in a sterile manner. There is an extremely low risk (<0.1%) of injury to nerves, and this is usually temporary. Back to Questions.