The version of ginger root that we use in Chinese medicinal formulations is known as xi xin in the dry powder form and sheng jiang in the fresh young root form, gan jiang is the ginger mother which is tougher, hotter and and more dispersing | asarum, Chinese wild ginger. The very best quality of the thirty different Chinese species is considered to be wild crafted from the Liaoning province in the north. Chinese ginger is very powerful and tends to be used in smaller doses than one might of a root bought in the produce section of the stores in America. If it has been powdered, around 3 grams maximum. Ginger enters the channels of the lung, heart and kidney. It relieves pain and reaches the head, lungs, bones and joints to disperse wind, cold, dampness and phlegm. Typically we will not prescribe this form of ginger if there is profuse sweating in deficient conditions or headache. In the Chinese Material Medica ginger can be found under the category “herbs that release the exterior.” We prescribe it regularly to treat common cold patterns, relieve vomiting, indigestion, nausea, flu, unblock urination and relieve pain. In the Divine Husbandman’s Classic of the Material Medica, sheng jiang, fresh young ginger root, “unblockes the clarity of the spirit.”
additional note of interest
According to the famous poet Su Shi and the celebrated natural philosopher Shen Gua, in their eleventh century compilation Fine Formulas of Su and Shen, combining green tea leaves with ginger root in equal parts can relieve travelers dysentery and vomiting. I have used this combination successfully when I did not have access to other remedies and find it absolutely invaluable.