TCM Wiki 天水散 2016-09-24 天水散 Name Tian Shui San Actions Clear heat and relieve thrist. Tianshui San The Prescription of 天水散 The Effect of 天水散 Indications Polydipsia. Dosage and administration Decoct 9 g. It should be wrapped during decocting. Notes for 天水散 Origin It is a mixture of Hua Shi, Gan Cao, Han Shui Shi.