| Exclusion Criteria: | 1) Nursing and pregnant females. Patients of childbearing potential should practice effective methods of contraception. Should a woman become pregnant or suspect she is pregnant while participating in this study, she should inform her treating physician immediately.
2) Active and uncontrolled infections.
3) Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, or psychiatric illness/social situations that would limit compliance with study requirements.
4) Known ornithine transcarbamylase disorder.
5) Patients requiring continuous valproic acid treatment for the control of seizure disorders. |