治暑日泄泻不止，肌肤烧热，心中燥渴，小便不利，或兼喘促。小儿尤多此证，用此方更佳。
生山药（一两） 滑石（六钱） 粉甘草（三钱） 作汤服
此久下亡阴，又兼暑热之证也。故方中用天水散以清溽暑之热。而甘草分量，三倍原方（原方滑石六、甘草
一，故亦名六一散），其至浓之味，与滑石之至淡者相济，又能清阴虚之热。又重用山药之大滋真阴，大固元
气者，以参赞之。真阴足，则小便自利，元气固，则泄泻自止。且其汁浆稠粘，与甘草之甘缓者同用，又能逗
留滑石，不至
速于淡渗。俾其清凉之性由胃输脾，由脾达肺，水精四布，下通膀胱，则周身之热与上焦之燥渴喘促，有不倏
然顿除者乎？
小儿少阳之体，最不耐热，故易伤暑。而饮食起居，喜贪寒凉，故又易泄泻。泻久则亡阴作热，必愈畏暑
气之热，病热循环相因，所以治之甚难也。此方药止三味，而用意周匝，内伤外感，兼治无遗。一两剂后，暑热
渐退，即滑石可以渐减，随时斟酌用之，未有不应手奏效者。小儿暑月泻久，虚热上逆，与暑热之气相并，
填塞胃口，恒至恶心呕吐，不受饮食。此方不但清暑滋阴，和中止泻，其重坠之性，又能镇胃安冲，使上逆之
热与暑气之热，徐徐下行，自小便出，而其恶心呕吐自止。
初定此方时，授门人高××录之。翌日，高××还里，遇一孺子，泄泻月余，身热燥渴，嗜饮凉水，强与饮
食，即恶心呕吐，多方调治不愈。高××投以此汤，一剂，燥渴与泄泻即愈其半。又服一剂，能进饮食，诸病皆愈。
Treats diarrhea that does not stop during the summer heat, with burning skin, dry thirst in the heart (chest/epigastrium), difficult urination, or accompanied by panting and shortness of breath. This syndrome is particularly common in children, and this formula yields better results.
Raw Dioscoreae Rhizoma (Shanyao) [Dioscorea opposita] (1 liang / approx. 37.5g)
Talcum [Talcum] (6 qian / approx. 22.5g)
Prepared Glycyrrhizae Radix et Rhizoma (Fen Gancao) [Glycyrrhiza uralensis] (3 qian / approx. 11.25g)
Decoct in water and take orally.
This is a syndrome where prolonged diarrhea has depleted Yin fluids, compounded by Summer-heat pathogenic factors. Therefore, the formula employs Tianshui San (Cool Water Powder, also known as Liuyi San/Six-to-One Powder, composed of Talcum and Licorice, used to clear Summer-heat and promote diuresis) to clear the heat of humid Summer-heat. The dosage of Gancao (Licorice) is three times that of the original formula (the original formula uses six parts Talcum to one part Licorice, hence the name Liuyi San). The rich, sweet flavor of Licorice harmonizes with the extremely bland nature of Talcum, and it can also clear the heat generated by Yin deficiency. Furthermore, a heavy dose of Shanyao (Dioscorea) is used because it greatly nourishes True Yin (Kidney Yin) and firmly consolidates Yuan Qi (Primary Qi), thereby assisting and supporting the therapeutic effect. When True Yin is sufficient, urination becomes smooth naturally; when Yuan Qi is consolidated, diarrhea stops naturally. Moreover, its viscous juice, when used together with the sweet and moderating properties of Licorice, can retain Talcum within the body, preventing it from being expelled too quickly through its bland and leaching diuretic action. This allows the cooling property of Talcum to transmit from the Stomach to the Spleen, and from the Spleen to reach the Lung. Water essence then distributes throughout the body and flows downward to the Bladder. In such a case, will not the heat of the whole body and the dry thirst and panting of the Upper Jiao be suddenly and completely eliminated?
Children possess a Shaoyang constitution (characterized by vigorous growth but delicate organs), making them least tolerant of heat, thus prone to contracting Summer-heat. Regarding diet and daily life, they prefer cold and cool foods, making them prone to diarrhea. Prolonged diarrhea depletes Yin and generates heat, inevitably leading to increased aversion to the heat of Summer-qi. The pathological heat and Summer-heat form a vicious cycle, making treatment very difficult. This formula contains only three herbs, yet its design is comprehensive and meticulous, treating both internal injury and external contraction without omission. After taking one or two doses, as Summer-heat gradually recedes, the amount of Talcum can be gradually reduced, adjusted according to circumstances. There is no case where it fails to produce immediate effects. In children suffering from prolonged diarrhea during the summer months, deficient heat rebels upward and combines with Summer-heat qi, blocking the stomach opening. This often leads to nausea and vomiting, rendering the child unable to accept food or drink. This formula not only clears Summer-heat and nourishes Yin, harmonizes the Middle Jiao, and stops diarrhea, but its heavy and sinking nature can also calm the Stomach Qi and pacify the Chong Mai (Penetrating Vessel). This causes the rebelling heat and Summer-heat to descend slowly and exit via urination, thereby stopping nausea and vomiting spontaneously.
When this formula was first finalized, I entrusted it to my disciple Gao XX for recording. The next day, upon returning to his hometown, Gao XX encountered an infant who had suffered from diarrhea for over a month. The child had fever, dry thirst, a craving for cold water, and experienced nausea and vomiting whenever forced to eat. Despite various treatments, the condition did not improve. Gao XX administered this decoction. After one dose, the dry thirst and diarrhea improved by half. After another dose, the child could eat, and all ailments were cured.