| Effect | None |
| Trial Design | Cohort |
| Trial Length | 2-4 Weeks |
| Number of Subjects | 56 |
| Gender | Both Genders |
| Age Range | 18-29, 30-44 |
In persons with encepalopathy following tramautic brain injury given phenylpiracetam at 100mg twice daily for one month, asthenic symptoms failed to note any visible improvement relative to control (unblinded).