Evidence-Based Complementary and Alternative Medicine ﬂow of damp-heat syndrome. Morbid ﬂuid retained in Shangjiao syndrome often shows dizziness aggravated by body position change, chest distress, palpitation, and cough. Morbid ﬂuid retained in Zhongjiao syndrome often shows gastric distension, abdominal distension, nausea, vomiting, poor appetite, thirst without desire to drink, or not thirsty, daytime sleepiness, and greasy fur. Morbid ﬂuid retained in Xiajiao syndrome often shows soreness, lumbar heaviness, low back pain, weakness and heaviness in lower extremity, edema, abnormal leucorrhea, dysuria and thick-greasy fur of tongue root. Cold ﬂuid retention syndrome can appear retching, headache, cold hands and feet in syncope and dysphoria. Fluid retention turning into heat syndrome and downward ﬂow of damp-heat syndrome can shows weakness and heaviness of lower extremity, thirst, yellow and ropiness leukorrhea, beriberi, and thick-greasy fur of tongue root. Zexie Tang (Decoction of American water Plantain), Fuling Xingren Gancao Tang (Decoction of Poria cocos, Almond, and Glycyrrhiza), Wu Ling San (Wuling Powder), Ling Gui Zhu Gan Tang (Decoction of Poria cocos, Cassia Twig, Atractylodes macrocephala and Glycyrrhiza), Banxia Baishu Tianma Tang (Decoction of Pinellia ternata, Atractylodes Macrocephala and Gastrodia elata), Wu Zhu Yu Tang (Decoc- tion of Evodia rutaecarpa), Er Miao Wan (Ermiao Pill), San Miao Wan (Sanmiao Pill), and Si Miao Wan (Simiao Pill) all can be used for dissipating excessive ﬂuid. Deﬁciency syndrome includes spleen deﬁciency syn- drome and kidney deﬁciency syndrome. As spleen promotes transportation and transformation of dampness, excessive ﬂuid retention is related to dysfunction of spleen. Cang Zhu (Rhizoma Atractylodes), Bai Zhu (Atractylodes macro- cephala), Fu Ling (Poria cocos), Ze Xie (American water Plantain), and Gan Cao (Glycyrrhiza) all can be used for removing dampness by strengthening spleen and replen- ishing qi. Kidney deﬁciency syndrome includes kidney yin deﬁciency syndrome and kidney yang deﬁciency syndrome. As prolonged disease involves kidney, we found that kidney deﬁciency syndrome is always related to hypertension. The longer the course of illness, the higher the incidence rate of kidney deﬁciency syndrome. Furthermore, it is not to be neglected that the antihypertensive drugs can also lead to kidney deﬁciency. Diuretic and β-blocker have greater impact on sexual function than other antihypertensive drugs. Sexual function will decrease when the above two antihypertensive drugs are sustained using more than ten years. Liu Wei Dihuang Wan (Pill of Rehmannia), Shen Qi Wan (Pill of Kidney Qi), Qi Ju Dihuang Wan (Pill of Chinese Wolfberry, Chrysanthemum, and Rehmannia) and Ji Sheng Shen Qi Wan (Pill for Reinforcing Kidney Qi) all can be used for reinforcing kidney. 4. Differentiation of Formula Syndrome Although the pathogenesis of the disease is complicated, the distribution of formula syndromes is regular. The common formula syndromes include Banxia Baishu Tianma Tang (Decoction of Pinellia ternata, Atractylodes and Gastrodia elata), Da Chaihu Tang (Major Bupleurum Decoction), and Liu Wei Dihuang Wan (Pill of Rehmannia). Banxia Baishu 3 Tianma Tang (Decoction of Pinellia ternata, Atractylodes macrocephala, and Gastrodia elata) is the classical represen- tative famous prescription for calming liver, suppressing liver yang hyperactivity, dissipating excessive ﬂuid, and expelling phlegm in Chinese medicine. It has been used widely in clinical practice for treatment of hypertension, which is also the author’s experienced prescription. Prestigious Chinese physicians such as Yue Meizhong and Jiang Erxun are skilled in using the decoction in both China and the world. Japan’s Chinese physicians often use it to treat hypertensive patients with weakness of gastrointestinal function. It can treat liver ﬁre and morbid ﬂuid retained in Zhongjiao, the indications of which are dizziness, headache, palpitation, abundant sputum, or without phlegm, poor appetite, nausea, and vomiting aggravated by tooth brushing, abdominal distension, soreness, lumbar heaviness, heaviness in lower extremity, edema, dysuria, constipation, or loose stool, big and light tongue with greasy fur and slippery pulse. The decoction is suitable for patients lacking physical activity for a long time, especially for old women, the physical characteristics of which are obesity of abdominal type with yellow and white skin, soft muscle, ease of dizziness, and headache. It is often combined with Zexie Tang (Decoction of American water Plantain), Wu Ling San (Wuling Powder), and Er Miao Wan (Ermiao Pill) in treating hypertension. Da Chaihu Tang (Major Bupleurum Decoction) syn- drome is a special type of the disease, which can be used for reconciling Shaoyang meridian and descending turbid substance. It has been used for treating liver ﬁre, stomach ﬁre, and intestinal ﬁre. The composing herbs such as Chai Hu (Bupleurum) and Huang Qin (Scutellaria) can sooth liver and clear liver ﬁre. Da Huang (Rhubarb), Zhi Shi (Citrus aurantium), and Shao Yao (Peony) can clear stom- ach ﬁre and relieve constipation. Professor Huang Huang, coming from Nanjing University of Chinese Medicine, is skilled in using the decoction, the indications of which are dizziness, headache, facial ﬂushing, conjunctival congestion, dry mouth, bitter taste in the mouth, halitosis, abdominal distension, constipation, yellow urine, red tongue, and wiry- rapid-powerful pulse. Professor Huang Huang pointed out that the physical characteristics are obesity type, strength, hard fullness, and distending pain of upper abdomin mostly accompanied by biliary-pancreatic diseases, poor appetite, nausea, vomiting, constipation, suppressive emotions, stress, sleep disorders, and so on. We found that the decoction is suitable for the young and middle-aged men with hyperten- sion. Professor Huang Huang often combined San Huang Xie Xin Tang (Decoction of Sanhuang for Purging Heart Fire) to clear heart and liver ﬁre [7]. Liu Wei Dihuang Wan (Pill of Rehmannia) is the classical representative famous prescription for nourishing kidney yin, which has been widely used for treating kidney deﬁciency and excessive ﬂuid syndrome. The indications of the decoction include dizziness, headache, tinnitus, low back pain, lassitude in loins and legs, edema, big and light tongue with less fur, and deep thready pulse. Due to the speciality of the disease, two therapeutic principles should be followed. The ﬁrst one is that herbs should be prescribed according to the rule of syndrome diﬀerentiation and treatment, and