2. Licorice, also known as "Lao Guo", is the most widely used Chinese herbal medicine in clinic. Licorice is sweet, and has the functions of clearing away heat and toxic materials, moistening lung, relieving cough, invigorating spleen, benefiting qi, relieving acute pain and harmonizing medicinal properties. In addition, licorice can also be used to treat pharyngitis, tonsillitis and swelling and pain. In addition, licorice can also be used to treat spleen and lung qi deficiency and heart qi deficiency.