【Nature and flavor】: sweet, light, neutral.
 [return through]: heart, spleen, stomach, lung and kidney meridians.
 【Effects】: It can promote diuresis and eliminate dampness. It can treat urinary incontinence, edema, diarrhea, stranguria and leucorrhea.
 【Notes】: Do not take if you are not suffering from water retention.
 【Medical records】
 "Ben Jing": "It cures malaria and promotes urination."
 "Medicine Properties": "It can relieve severe fever caused by colds, fevers caused by epidemics, induce sweating, and cure swelling, fullness in the abdomen, and acute pain."
 "Zhenzhu Nang": "It can relieve diarrhea, quench thirst, and treat stranguria."
 "Medical Origin" says: "It can remove dampness and dryness. "Secrets of Main Treatments" says that it can remove heartache and melancholy."
 "Introduction to Medicine": "Treats heatstroke and thirst."
 "Compendium of Materia Medica": "It can open the pores, treat stranguria, swelling, athlete's foot, leucorrhea, leucorrhea, stranguria during pregnancy, and urinary incontinence."
 【Predecessors release medicine】
 "Compendium of Materia Medica": "Poria is a medicine that penetrates dampness, promotes water flow, and resolves yin and yang. This medicine tastes sweet, light, and slightly bitter. Although bitterness descends, sweetness and lightness can penetrate and disperse. It can rise and descend, and descend and rise. Therefore, it is good at opening the pores, dividing the qi of the surface yang and the yin inside, and promoting urination. Therefore, it was used in ancient times to treat malaria. Zhen's prescription is used to treat typhoid fever, warm epidemics, and severe fever. It can induce sweating and expel evil. This is to divide and benefit the qi of the surface yang to the outside. Zhang's prescription is used to treat abdominal distension, swelling, acute pain, irritability, malaria, dysentery, and diarrhea. This is to divide and benefit the qi of the yin inside. Zhang Zhongjing used Wuling San to treat patients with floating pulse, fever, thirst, and difficulty urinating in solar disease to stop vomiting; cold cough in winter, combined with cold and heat like malaria, is called phlegm wind, and Wuling San is used to settle the cough. These three methods all focus on Polyporus, which can open the pores and divide and benefit yin and yang."
 "Pharmaceutical Chemistry": "Poria has a light taste, and its taste is mainly related to infiltration. It enters the spleen to clear the water channel. It is used to treat diarrhea, dampness, stranguria, edema, and jaundice. It is the most effective, so it is said to have the same effect as amber. However, it cannot be used as the main agent. It can assist tonic drugs to strengthen the spleen, lead laxative drugs to regulate the spleen, assist warming drugs to warm the spleen, and use cooling drugs to clear the spleen. For those with severe spleen deficiency, it may lose vital energy, so be careful."
 "Compendium of Materia Medica": "The prescription book says that if dampness is in the spleen and stomach, you must use Poria cocos and Alisma orientalis to regulate it. Poria cocos is from yang to yin, which is what Jie Gu called rising and slightly descending, and it is yang; Alisma orientalis is from yin to yang, which is what Jie Gu called sinking and descending, and it is yin. The two flavors are combined to regulate yin and yang."
 "Changsha Yaojie": "Poria cocos is more effective in diuresis than Poria cocos. However, the nature of water is that it cannot flow alone without the smooth flow of earth and wood. The diuresis effect of Zhuling Powder has the effect of drying damp earth of Atractylodes macrocephala; the diuresis effect of Zhuling Decoction has the effect of clearing wind and wood of donkey-hide gelatin; the diuresis effect of Wuling has the effect of drying earth of Atractylodes macrocephala and the effect of reaching wood of cinnamon twig; the diuresis effect of Bawei has the effect of reaching wood of cinnamon twig and the effect of clear wind of Rehmannia root: if you only seek to benefit from pig, Poria cocos, Scutellaria baicalensis, and Ze, it may be difficult to achieve miraculous results."
 "Compendium of Materia Medica" states: "Poria cocos is used in all prescriptions such as Si Ling and Wu Ling. Although it is similar to Alisma orientalis, it enters the bladder and kidney meridians, relieves heat and dampness, and promotes diuresis. However, when the water is eliminated, the spleen will be dry, and when the water is exhausted, the qi will leave. Although Alisma orientalis is also diuretic and similar in nature, it is mostly salty and still has moistening effect. Although Alisma orientalis can treat fire, it also damages qi, but it can nourish yin and still has tonifying effect. Therefore, Poria cocos must be used together with Alisma orientalis, so that the moistening and dryness are evenly balanced without bias. It is a problem. Although Poria is a penetrant, it can remove dampness, but Poria enters the Qi and moves upward, while this enters the blood and descends. It is also used with Alisma orientalis to promote diuresis and reduce swelling, and to treat malaria and dysentery. It is a medicine that is used to treat internal dampness and heat caused by summer heat. It is necessary to use this medicine to promote diuresis. The ancients said that there is nothing like this medicine to clear urine. Therefore, among the yin-nourishing medicines, only Alisma orientalis is used, and Poria is not used. This is exactly what it means. However, this medicine is only used to guide water, and body fluids are easily consumed. Long-term use often causes damage to the eyes. "