Sodium Valproic is used to help prevent migraine headaches from occurring. About 50 percent of patients treated with sodium Valproic reported experiencing fewer migraines, although the adverse side effects were not inconsiderable. Patients reported side effects such as drowsiness, dizziness, and nausea while using the drug. It is also worth noting that women of childbearing age should avoid the drug as there is the possibility of birth defects.