| Effect | Decrease |
| Trial Design | Double blind |
| Trial Length | 2-4 Weeks |
| Number of Subjects | 100 |
| Sex | Female |
| Age Range | 45-64 |
| Body Types | Overweight |
Supplementation of valerian root at 530mg twice daily for a period of four weeks in postmenopausal women who also reported insomnia noted that 30% of the treatment group reported significant improvements to their insomnia (assessed by the PSQI) whereas only 4% of the placebo group noted benefit.
