Ginger has been used in traditional cultures to treat digestive upset and increase appetite. Scientific data support its use as an antiemetic with no known adverse reactions at recommended doses. However, it may be a potential anticoagulant, and those who overdose on ginger have shown symptoms of hypertension, central nervous system depression and dysrhythmia. Standardized extract of ginkgo leaf is claimed to increase circulation and have antioxidant activity. Well designed European and American studies, although few in number, have suggested that Ginkgo extract is benificial in persons with dementia.
Effects are very modest at best.
One of the world's most famous herbs. Adaptogens are herbs that claim to increase the overall resistance to all types of stress. Other herbal adaptogens include Astragalus, Siberian Ginseng and Schizandra. Again, there is no solid scientific evidence that Ginseng is useful for anything. Goldenseal root has a long history as a native American herb used by Indians and early settlers for its antiseptic wound-healing properties.