The main function of codonopsis pilosula is invigorating qi.

It is most suitable for everyday fatigue and listlessness. Weak people with lung-qi deficiency who have a deep voice, feel short of breath, and gasp for breath at the slightest activity. People who focus on spleen and stomach qi deficiency, limb weakness, loss of appetite, loose stool, should also use codonopsis pilosula. The compatibility of Rhizoma Atractylodis Macrocephalae, Poria and Radix Glycyrrhizae Preparata is commonly used, which is the famous prescription Sijunzi Decoction for invigorating qi and strengthening spleen. For deficiency of both lung qi and spleen qi, Radix Astragali, Rhizoma Atractylodis Macrocephalae, Poria, Pericarpium Citri Tangerinae, Radix Angelicae Sinensis, Cimicifuga Rhizoma, Radix Bupleuri, Radix Glycyrrhizae Preparata, Rhizoma Zingiberis Recens and Fructus Jujubae should be used together, which is the famous Buzhong Yiqi Decoction.

Codonopsis pilosula can invigorate qi and nourish blood, which is one of its major characteristics.

Therefore, people with deficiency of both qi and blood, shortness of breath, palpitation, fatigue, pallor, dizziness, poor appetite, loose stools and easy to catch a cold should also take Dangshen. Experiments have proved that Codonopsis pilosula can increase red blood cells and hemoglobin, so it is very beneficial for anemia patients to eat Codonopsis pilosula. Because of the leukopenia caused by chemotherapy and radiotherapy, taking codonopsis pilosula also has the effect of promoting leukopenia.