In Europe, the primary medicinal use of
Liquorice is to treat coughs, colds, and other respiratory infections. Glycyrrhizinic acid seems to stop the growth of many bacteria and of viruses such as influenza A. It also stimulates the production of interferon. We find it particularly effective as part of a natural treatment for lung problems, and infections that affect the lungs, and as previously mentioned asthma and bronchitis. Chinese researchers agree that liquorice is effective against cough and soothes the inflamed tissues of a sore throat. In fact, ancient Chinese texts summarize the uses of liquorice rather well: "improve the tone of the 'middle Jiao' [digestive system] and replenish Qi, to remove 'heat' and toxic substance, to moisturize the lungs and arrest coughing, and to relieve spasms and pain." Modern practitioners use different terminology, but the therapeutic benefits are quite similar.