Other ingredients that were quantifiable at no lesser than two time points after rikkunshito administration were pachymic acid, liquiritin apioside, liquiritin, isoliquiritigenin, glycycoumarin, glycyrrhetinic acid 3-O-glucuronide, nobiletin, 3,3′,4′,5,6,7,8-heptamethoxyflavone (heptamethoxyflavone), and naringenin.
Source: wiktionary