sān rén tāng • three-nut decoction • 三仁汤sān rén tāng • three-nut decoction • 三仁汤 drain dampness yì yĭ rén is used for patterns with dampness, wind-damp bi syndrome, spleen deficiency with dampness, damp-heat, pus. symptoms indicating the use of yì yĭ rén painful fingers, joint stiffness and pain, digestive issues, diarrhea, leg-qi, urinary dribbling, lung…