A recent development in the pharmacologic treatment of affective disorders, especially bipolar disorder, has been the use of anticonvulsant drugs. The first to be tried, carbamazepine (Tegretol) often is the next line of treatment for bipolar disorder for persons unresponsive to lithium therapy. Carbamazepine has various side effects, although most are dose related and can be avoided by judicious clinical practice. The most worrisome side effect is aplastic anemia, which occurs very rarely but in an idiosyncratic manner. Ref: Kaplan et al, Page 553- 554