The usual maximum dosage of tai ginseng is 30 grams, and use of tai ginseng should be in accordance with medical advice. The usual dosage of Radix Panax Ginseng is 9 to 30 grams per day, if the dosage exceeds 30 grams per day, it should be confirmed by a physician. Radix Panax quinquefolium has the effect of tonifying the qi and benefiting the lungs, strengthening the spleen and promoting the production of body fluid, strengthening the stomach and eliminating food. It is mostly used for the regulation of qi and yin deficiency and other conditions. It is recommended to choose the appropriate dosage and medication to take according to the different conditions. Tai Zi Ginseng is suitable for the regulation of weak spleen qi (weakness of spleen qi), insufficient stomach yin (insufficient yin fluid in the stomach), yin deficiency and lung dryness (deficiency of yin fluid in the human body, which leads to dryness of the lungs and lack of nourishment) and other medical conditions. It is not recommended for fire or heavy dampness. According to their own illnesses and diseases, under the guidance of the doctor, after the identification of the evidence to choose the appropriate drugs and dosage of symptomatic treatment.