Licorice was added to this prescription to harmonize the properties of the other herbs.
Tips
culture
In traditional Chinese medicine, 甘草 is called "the peacemaker of a hundred herbs" (百药之和) because it is added to many prescriptions to harmonize the effects of other ingredients and reduce toxicity.
memory
甘 (sweet) + 草 (herb/grass) — licorice root has a naturally sweet taste.