Xiyangshen is cold in nature, bitter and slightly sweet in taste, and belongs to the heart, lung and kidney meridians, with the effect of tonifying qi and nourishing yin, and clearing up the life of the body fluid. According to the Qing Dynasty "Materia Medica from the new" records: "American ginseng tonifies the lungs and reduces the fire, generates fluids and removes tiredness. It is suitable for those who are weak and have fire." It can be seen that the use of American ginseng is not extensive, and there are contraindications in its application. However, in recent years, various kinds of American ginseng products flood the market, such as American ginseng pills, American ginseng tablets (containing tablets), American ginseng tea, American ginseng wine, American ginseng sugar, and so on, plus some advertisements rendering American ginseng as a "universal" health care tonic to strengthen the body, which tends to mislead the consumer and even bring serious consequences, such as the body of the weak and cold or due to the gas For example, if a patient who has a cold body or a fire due to gas depression mistakenly takes American ginseng, it can make his condition worse.

1) Modern clinical research in traditional Chinese medicine shows that American ginseng can be used in the following diseases:

1. Cough and phlegm due to deficiency of yin in the lung and kidney, or sputum with blood in the sputum, etc. It is often used to enhance the efficacy of traditional Chinese medicines such as maitake, tiandong, zhimou, beimou and agaricus, etc. It is used to enhance the effect of the medicines.

2. External heat illness or internal injuries caused by prolonged injury to qi and yin injury, such as tiredness and thirst.

3. Internal heat and thirst, dry mouth and tongue due to deficiency of fluid.

4. Blood in the stool due to intestinal heat and fluid deficiency.

5. Adverse reactions of cancer patients due to radiation therapy or chemotherapy, such as nasopharyngeal cancer patients can use 3 grams of American ginseng, decoction, one dose per day, two weeks before radiation therapy, until the completion of radiation therapy, to prevent and control dry throat, poor appetite and other symptoms caused by radiation therapy has a good effect.

6. Patients with hypertension, coronary heart disease, angina pectoris, etc., especially those with prominent symptoms of irritability, stuffiness and thirst caused by heart disease.

7. Regulation of central nervous system balance and has a certain degree of anti-fatigue, anti-hypoxia and other effects.

2) The following methods can be used to take American ginseng:

1. Containing method - put the skinless American ginseng in the rice cooker and steam it to make it soft, then cut it into thin slices with a knife for spare use, each time a few slices in the mouth, and the daily dosage of 2 - 4 grams.

2. Powder method - research the product into fine powder, 5 grams each time, wrapped in gauze or filter paper, put in boiling water and brewed as tea.

3. Stewing method - the original skin of American ginseng slices, 2 - 5 grams per day in a porcelain bowl, add the right amount of water to soak for 3 - 5 hours, and then seal the bowl, put the pot into the steam 20 - 30 minutes, half an hour before breakfast.

4. Steam method - the American ginseng research fine powder, each time 5 grams plus an egg steamed and eaten.

5. Cooking method - cut the ginseng into thin slices, and put 5 grams of ginseng into the soup each time when making vegetable soup, and then eat the soup and medicine together, once a day.

6. Porridge method - take 50 grams of rice, cook it into thin porridge, add 5 grams of American ginseng powder when it is cooked, cook it for one or two times a day, and eat it for breakfast.

7. Wine method - take 30 grams of this product, add 500 grams of rice wine soaked in 7 days to drink, 2 times a day, each time on an empty stomach, drink 20 to 50 ml. Wine and then renewed, to the end of the flavor after taking the ginseng chewing service.

3) Ginseng therapeutic dietary formula:

1. Bird's nest stewed ginseng - take bird's nest, ginseng 5 grams each. Bird's nest will be soaked in water, washed, and American ginseng with the stew pot, injected into 80% full of boiling water, covered with water stew for 3 hours, you can drink, once a day, American ginseng can be reused to the end of the flavor.

This formula benefits the lung and stops coughing, and is suitable for dry cough, coughing up blood, hot flashes and night sweating caused by the deficiency of lung and stomach yin.

2. Yangshen essence - 150 grams of American ginseng, cane sugar. Ginseng decoction 2 times, the two liquids are combined, the fire concentrated, plus sugar drying spare, 10 grams each time; 2 times a day; warm water to drink.

This formula benefits qi and nourishes yin, and is suitable for the regulation of qi and yin deficiency.

4) Contraindications of taking American ginseng:

While American ginseng is unique in treating diseases and fitness, it also has contraindications. According to Chinese medicine, it is contraindicated for those who have insufficient yang qi and cold dampness in the stomach. For example: pale, swollen face, cold, cold, slow heartbeat, loss of appetite, nausea, vomiting, abdominal distension, white tongue, as well as impotence, premature ejaculation, spermatorrhea; women's libido indifference, menstrual cramps, amenorrhea, more than one water, are contraindicated to take American ginseng. In addition, children with stunted growth, indigestion, cold and cough or acute infection with dampness and heat, should not take American ginseng.

As with other medicines, American ginseng can also cause adverse reactions if it is not taken correctly. If some people take American ginseng, there will be chills, body temperature drop, loss of appetite, abdominal pain and diarrhea; some will have dysmenorrhea and delayed menstruation; others will have allergic reactions, such as upper and lower extremities will appear scattered blisters of varying sizes, itching abnormally. In the occurrence of the above symptoms, should immediately stop taking American ginseng.

Additionally, it is not advisable to drink tea when taking it, because tea contains tannic acid, which affects the efficacy of American ginseng; it is not advisable to eat radish after taking it, because radish is a gas-breaking, while American ginseng is a gas-complementary.