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西洋参即花旗参、美洲参、粉光参,俗称洋参,主要产于美国和加拿大。其中以美国威斯康星州的产品为道地药材。目前,国内已栽培成功且大面积种植。它与我国的人参均属于五加科多年生的草本植物。祖国医学认为,西洋参性寒、味甘微苦,入心、肺、肾经,具有益气、养阴、清火、养胃、生津等功能,适用于气阴两虚且有热证者。常用于神经衰弱、烦躁易怒与肺热燥咳、气怯懒言、四肢倦怠、热病后伤阴、津液亏损等症。对于久病、分娩、劳累过度所引起的身体虚弱、元气损伤,以及出血、贫血、头晕、头痛、腰酸背痛、自汗盗汗等,均有良效。近年来,用于治疗高血压、冠心病、肺心病、胃病,以及消除肺癌、鼻咽癌等放疗后的不良反应,也有较好的效果。然而,西洋参能否充分发挥疗效,与其用法密切相关。现将沿用多年的传统方法评介如下:含化法将西洋参放在砂锅内隔水蒸,使之软化,然后切成薄片,放在干净的小容器内。每日早饭前和晚上临睡前各含服2～4片,再细细咀嚼咽下。
American ginseng is American ginseng, American ginseng, powdered ginseng, commonly known as ginseng, mainly produced in the United States and Canada. Among them, the United States of Wisconsin products are authentic herbs. At present, China has successfully cultivated and planted large areas. It and our country’s ginseng belong to the perennial herbs of the Araliaceae. According to the motherland’s medicine, American ginseng is cold, sweet and bitter, and it has the functions of Qi, Nourishing Yin, Clearing Fire, Yangwei and Shengjin. It is suitable for those who have both Qi and Yin deficiency and heat syndrome. Commonly used for neurasthenia, irritability, irritability and dryness, cough, sputum, lankness, limbs, burnout, fever after injury, fluid loss embolism. For long illness, childbirth, overwork caused by physical weakness, vitality damage, as well as bleeding, anemia, dizziness, headache, back pain, spontaneous sweating, etc., have good results. In recent years, it has been used for the treatment of hypertension, coronary heart disease, pulmonary heart disease, stomach disease, and elimination of adverse reactions after radiotherapy such as lung cancer and nasopharyngeal cancer. However, whether American ginseng can fully exert its curative effect is closely related to its usage. The traditional methods used for many years are reviewed as follows: The American ginseng is placed in a casserole and steamed to soften it, then cut into thin slices and placed in a clean, small container. Every morning before going to bed and at night before going to sleep, each serving contains 2 to 4 pieces, and then chewed and swallowed.