This formula is a modification of Yi Gan San (Repress the Liver Powder) originally found in Yang Shi-ying's Song dynasty Ren Chai Zhi Zhi Fang (Compassionate & Abstemious Straight Guiding Formulas). Modifications are by Bob Flaws. When modified, this formula can also be seen as a version of Xiao Yao San (Rambling Powder). Blue Poppy's version is a 10:1 extract in a glycerin base.

Pattern discrimination:

Liver spleen disharmony (liver depression qi stagnation with spleen qi vacuity) with internal heat, malnourishment of the heart spirit, and possible phlegm dampness.