Chaihu Shugan Wan (Chinese: 柴胡舒肝丸) is a blackish-brown honeyed pill used in Traditional Chinese medicine to "disperse stagnated liver-qi, to activate the flow of qi, to relieve distension and pain".
[1] It is used in cases where there is "stagnation of liver qi, distension of chest and hypochondria, indigestion, and acid eructation".