Ayurveda recommends the root as beneficial in the treatment of coughs, colds, and other bronchial irritations. The root may be chewed as throat lozenges; or prepared as infusions by removing the outer bark and boiling for several minutes, to relieve hoarseness and coughs. During Charaka’s period, it was popular among singers as a lozenge.
Read more: Medicinal use of Liquorice http://www.medindia.net/alternativemedicine/liquorice.asp#ixzz3h621uAXR