Rhizoma Polygonati is mainly from Hebei, Inner Mongolia, Shaanxi and other provinces. Harvest in spring and autumn and the best is harvested in autumn. Remove fibrous root and aerial part, wash and then steam until oil. Dry in the sun or dry by baking. Rhizoma Polygonati is neutral in nature with sweettaste. It enters spleen, kidney and lung meridians. According to mensurate, it contains steroidal saponins, rhizomepolygonatic, oligosaccharide, oligosaccharides, niacinamide, mucoid substance, quinones, multiple amino acids, starch and trace elements such as zinc, copper and iron. It has effects on tonifying qi with nourishing yin, strengthening spllen with moistening lung and tonifying the kidney. It is used for the weakness of the spleen and stomach, fatigue, dry mouth with less eating, lung deficiency with cough due to dryness, deficiency of the kidney, and dizziness due to damage of essence, soreness and weakness of waist and knees, premature graying hair, internal thermal with consumptive thirst.
Modern pharmacological studies have confirmed that extract of Rhizoma Polygonati can inhibit bacillus typhi, staphylococcus aureus and herpes virus. 2 percent of extract of polygonatum alcohol can inhibit pathomycete such as, trichophyton violaceum and epidermophyton. Drink decoction can increase activity of superoxide and dismutase in hepar. It can decrease blood sugar, blood fat and blood pressure, stop bleeding, prevent fatigue and oxidation, improve immunity and delay senility.
For oral administration: decoction, the usual dose is 10 ~ 30 grams. It also can be made into water, alcohol extract and aqueous extract. The followings introduce several commonly methods.
Tuberculosis: decoct 2500 grams of Rhizoma Polygonati with water and then concentrate into paste. 4 times a day and each time 10 ml.
Ringworm: pound amount of Rhizoma Polygonati to pieces, and then soak with alcohol (95% degree) 1 ~ 2 days. Distill to removing the most of the alcohol and concentrate. Add three times the water. After precipitation, take its filtrate, and steam out the rest of the alcohol. When use, people directly rub it into the affected area with 2 times a day.
Invigorating qi: put Rhizoma Polygonati and wolfberry into equal part. And grinde into fine powder, and refine with honey into pill as the sizes of semen firmianae. People can take pills everyday with warm water.
Pulmonary overstrain with hemoptysis: braise 60 grams of Rhizoma Polygonati and 30 grams of rock candy with water.
Children with weakness of legs: braise 30 grams of Rhizoma Polygonati, 30 grams of winter honey with boiling water.
Thirst due to stomach heat: 18 grams of Rhizoma Polygonati, 15 grams of prepared rehmannia root, 15 gram of yam, 12 grams of radices trichosanthis, and 12 grams of radices ophiopogonis. Decoct with water.
Enterobiasis: braise 24 grams of Rhizoma Polygonati with water and add 30 grams of crystal sugar.
Hyperlipidemia: 30 grams of Rhizoma Polygonati, 25 grams of hawthorn and 15 grams of polygonum multiflorum. Decoct with water, daily 1 agent.
Leukopenia: decoct 2 copies of Rhizoma Polygonati and 5 copies of jujube into apozem. Take orally with 20 ml each time and3 times a day.
Diabetes: 15 grams of Rhizoma Polygonati, 15 grams of yam, 12 grams of rhizoma anemarrhenae, 12 grams of polygonatum and 12 grams of lilyturf root. Decoct with water. It can treat thirsty, fatigued body and lack of strength and deficiency of both vital energy and yin.