气寒。味甘。无毒。主伤中。五劳六极。羸瘦崩中绝脉。补虚益气。（焙）
桑皮气寒。禀天冬寒之水气。入足少阴肾经。味甘无毒。得地中正之土味。入足太阴脾
经。
气降味和。阴也。中者中州脾也。脾为阴气之原。热则中伤。桑皮甘寒。故主伤中。五劳者
。五脏劳伤真气也。六极者。六腑之气虚极也。脏腑俱虚。所以肌肉削而羸瘦也。其主之者
。桑皮甘以固脾气而补不足。寒以清内热而退火邪。邪气退而脾阴充。脾主肌肉。自然肌肉
丰而劳极愈矣。崩中者血脱也。脉者血之腑。血脱故脉绝不来也。脾统血而为阴气之原。甘
能益脾。所以主崩中绝脉也。火与元气。势不两立。气寒清火。味甘益气。气充火退。虚得
补而气受益矣。
制 方:
桑皮同白芍、苡仁、木瓜、白茯、陈皮、赤小豆。治水肿如神。同白芍、沙参、杞子、
黄
、甘草、北味。治虚劳。同糯米末。米饮下。治吐血咳嗽。桑皮一味。治皮水。
气寒。味苦甘。有小毒。主除寒热。出汗。
桑叶气寒。禀天冬寒之水气。入足太阳寒水膀胱经。味苦甘有小毒。得地中南火土之味。
而
有燥湿之性。入手少阴心经、足太阴脾经。气味降多于升。阴也。太阳者行身之表。而为一
身之外藩者也。太阳本寒标热。所以太阳病则发寒热。桑叶入太阳。苦能清。甘能和。故除
寒热。汗者心之液。得膀胱气化而出者也。桑叶入膀胱而有燥湿之性。所以出汗也。
制 方:
桑叶同黄 、归身。治血虚身热无汗。同附子、黄 。治里气虚寒。表邪末尽。同脂麻
丸。
名桑麻丸。治血痹。
【桑白皮】
气味寒，味甘，无毒。主治内伤中气，五劳六极，身体消瘦，崩漏及脉绝等症，具有补虚益气的作用。（经焙干后使用）
桑白皮气味寒，禀受自然界冬季寒冷的水气，归入足少阴肾经；味道甘且无毒，获得大地中正的土味，归入足太阴脾经。
其性沉降而味平和，属阴。所谓“中”，指中州的脾脏。脾为阴气的本源，若受热邪则损伤中气。桑白皮味甘性寒，因此主治中气受损。所谓“五劳”，是指五脏的真气受到劳损；所谓“六极”，是指六腑之气虚弱到了极点。脏腑都虚弱，所以肌肉消削而身体消瘦。桑白皮之所以能治疗这些病症，是因为其甘味能固护脾气以补充不足，寒性能清除内部热邪以退去火邪。邪气退去而脾阴充盈，脾主肌肉，自然肌肉丰满，劳损至极的症状也就痊愈了。“崩中”是指血液脱失，“脉”是血液汇聚之所，血脱故脉搏断绝不来。脾统摄血液并为阴气的本源，甘味能补益脾气，所以桑白皮能主治崩中和脉绝。火邪与元气势不两立，桑白皮气寒能清火，味甘能益气，元气充盛则火邪退却，虚证得到补益，元气也就受益了。
制方应用：
桑白皮同白芍、薏苡仁、木瓜、白茯苓、陈皮、赤小豆配伍，治疗水肿效果神奇。同白芍、沙参、枸杞子、黄芪、甘草、北五味子配伍，治疗虚劳。同糯米末一起，用米汤送服，治疗吐血咳嗽。单用桑白皮一味药，治疗皮水病。
桑叶气味寒，禀受自然界冬季寒冷的水气，归入足太阳膀胱经（寒水之经）；味道苦、甘且有小毒，获得大地南方火土的味道，因而具有燥湿的性质，归入手少阴心经和足太阴脾经。其气味下降多于上升，属阴。太阳经行于体表，是一身的外围屏障。太阳经本气为寒，标气为热，所以太阳经受邪则出现恶寒发热。桑叶入太阳经，苦味能清热，甘味能和缓，因此能去除寒热。汗是心的津液，依靠膀胱的气化作用而出。桑叶入膀胱经且具有燥湿的性质，因此能促使出汗。
制方应用：
桑叶同黄芪、当归身配伍，治疗血虚导致的身体发热且无汗。同附子、黄芪配伍，治疗里气虚寒而表邪未尽。同芝麻制成丸剂，名为桑麻丸，治疗血痹。
[Sangbaipi (Mulberry Root Bark)]
The qi is cold. The flavor is sweet. It is non-toxic. It primarily treats internal injury to the middle jiao, five types of fatigue and six extremes, emaciation, metrorrhagia (uterine bleeding), and pulselessness. It tonifies deficiency and benefits qi. (Used after being baked/dried).
Sangbaipi has a cold qi, inheriting the winter cold water energy from nature, entering the Foot-Shaoyin Kidney Meridian. Its flavor is sweet and non-toxic, obtaining the central earth flavor from the earth, entering the Foot-Taiyin Spleen Meridian.
Its nature is descending and its flavor is mild, belonging to Yin. "Middle" refers to the Spleen in the Middle Jiao. The Spleen is the origin of Yin Qi. Heat damages the middle. Sangbaipi is sweet and cold, thus it primarily treats injury to the middle. "Five Fatigues" refer to the depletion of true qi in the five Zang organs. "Six Extremes" refer to the extreme deficiency of Qi in the six Fu organs. When both Zang and Fu are deficient, muscles waste away leading to emaciation. The reason Sangbaipi treats these conditions is that its sweetness consolidates Spleen Qi and supplements insufficiency, while its coldness clears internal heat and retreats fire pathogens. As pathogens retreat and Spleen Yin fills up, and since the Spleen governs muscles, the muscles naturally become plump and the extremity of fatigue heals. "Metrorrhagia" refers to blood loss. The vessels are the reservoir of blood; when blood is lost, the pulse ceases to come. The Spleen controls blood and is the origin of Yin Qi; sweetness can benefit the Spleen, thus it treats metrorrhagia and pulselessness. Fire and Yuan Qi (Original Qi) are mutually exclusive. Cold qi clears fire, sweet flavor benefits Qi. When Qi is full, fire retreats; deficiency is supplemented and Qi benefits.
Prescription Applications:
Sangbaipi combined with Baishao (White Peony Root), Yiren (Coix Seed), Mugua (Chaenomeles Fruit), BaiFu (Poria), Chenpi (Tangerine Peel), and Chixiaodou (Adzuki Bean) treats edema with miraculous effect. Combined with Baishao, Shashen (Glehnia Root), Qizi (Goji Berry), Huangqi (Astragalus Root), Gancao (Licorice Root), and Beiweizi (Schisandra Fruit), it treats consumptive disease (Xu Lao). Mixed with glutinous rice powder and taken with rice broth, it treats hematemesis and cough. Using only Sangbaipi treats Pi Shui (Skin Water/Edema).
[Sangye (Mulberry Leaf)]
The qi is cold. The flavor is bitter and sweet. It has slight toxicity. It primarily eliminates chills and fever, and induces sweating.
Sangye has a cold qi, inheriting the winter cold water energy from nature, entering the Foot-Taiyang Bladder Meridian (Cold Water Meridian). Its flavor is bitter and sweet with slight toxicity, obtaining the southern fire-earth flavor from the earth, thereby possessing drying-dampness properties, entering the Hand-Shaoyin Heart Meridian and the Foot-Taiyin Spleen Meridian. Its aroma and flavor descend more than they ascend, belonging to Yin. The Taiyang meridian runs on the surface of the body and serves as the outer barrier of the whole body. The root of Taiyang is cold and its branch is heat; therefore, when Taiyang is diseased, chills and fever occur. Sangye enters the Taiyang meridian; bitterness can clear heat, and sweetness can harmonize, thus eliminating chills and fever. Sweat is the fluid of the Heart, emerging through the Qi transformation of the Bladder. Sangye enters the Bladder meridian and possesses drying-dampness properties, thus inducing sweating.
Prescription Applications:
Sangye combined with Huangqi (Astragalus Root) and Guishen (Angelica Sinensis Root Head) treats body heat due to blood deficiency without sweating. Combined with Fuzi (Prepared Aconite Root) and Huangqi (Astragalus Root), it treats interior deficiency-cold with incomplete exterior pathogen. Combined with Sesame to form pills, named Sangma Wan (Mulberry Leaf and Sesame Pill), it treats Blood Bi (Blood Stasis Obstruction).