A lot has been published about this herb.

Quite impressive has been the following findings [even it there may be more postive effects but less examined as yet]

Reduces anxiety —- reduces cortisol levels caused by stress and thereby improves cognitive function—– reduces total cholesterol —- increases strength——improves hypothyroidea—–makes one wake up more refreshed [taken in the evening]

Dose: 250-500 mg per day on average.