The difference between Yin Chen Wu Ling Wan and Wu Ling San lies in the composition, efficacy, main treatment and dosage form, 1. Composition: Yin Chen Wu Ling Pill is composed of Yin Chen, Ze Diarrhea, Poria, Poria, Atractylodes Macrocephala, Cinnamon. Wu Ling San is composed of Poria, Zea laxa, Poria, Cinnamon, Atractylodes macrocephala. 2. Efficacy and Indications: Yin Chen Wu Ling Wan clears dampness and heat and facilitates urination. It is used for damp-heat in liver and gallbladder (damp-heat evils accumulated in liver and gallbladder), damp-heat jaundice caused by spleen and lung stagnation, distension and fullness in the epigastrium (abdomen), and dysuria (unruly urination). Wu Ling San can warm yang and transform qi (warming the body’s yang qi), diuretic and water-expelling. It is used for edema caused by Yang’s failure to transform Qi (blockage of the body’s Qi) and internal retention of water-dampness (water-dampness stays in the body), with symptoms such as incontinence of urine, edema and abdominal distension, vomiting and diarrhea, and thirst for water. 3. Dosage form: Yin Chen Wu Ling Wan is a pill; Wu Ling San is a powder. Please use the medicine under the guidance of physician.