Medicine refers to the method of regulating physical state with drugs in order to improve health and delay aging. Drugs with anti-aging and anti-aging effects are called longevity drugs. Chinese medicine believes that the important conditions for human health and longevity are strong natural endowment and adequate nutrition. Spleen and stomach are the foundation of the day after tomorrow, the source of qi and blood biochemistry, and the nutrition needed for human life activities depends on spleen and stomach. Kidney is the foundation of nature, the root of life, full of kidney qi, strong metabolic ability of the body, and slow aging. For this reason, the health-preserving and anti-aging effects of life-prolonging drugs are mainly to maintain the innate and acquired, that is, to maintain the spleen and kidney, supplemented by other methods, in order to achieve the purpose of strengthening the body. Chinese medicine believes that people's longevity depends entirely on the balance of yin and yang. The basic point of using prescription drugs to prolong life lies in yin and yang, adjusting the surplus of yin and yang and restoring its dynamic balance.

Traditional Chinese medicine nursed back to health by tonifying, which is generally used for the elderly and infirm. This kind of human body mass is mostly "virtual", so it is advisable to use tonic method. People who are not healthy generally don't need to take it. It is particularly important to note that taking tonics should be targeted. When you see tonic, you will think it is complete and rash, which will easily aggravate the imbalance of qi, blood, yin and yang in the body. Not only is it useless, but it is harmful. You should not blindly take tonics. You have to identify the actual situation and make sure it is virtual. The purpose of tonic is to coordinate yin and yang, and tonic should not be too biased. Excessive deviation will be harmful, lead to a new imbalance between yin and yang, and make the body suffer another injury. Virtual is to be supplemented, but the specific situation of virtual is different. Therefore, it is necessary to distinguish viscera, qi and blood, yin and yang, cold and heat, deficiency and excess when tonic, and make tonic based on syndrome differentiation, so as to achieve the effect of impartiality and longevity. In addition, taking tonics should adopt different methods according to the ups and downs of yin and yang in the four seasons. Otherwise, it is not only useless, but harmful to health. Aging is a complex and slow process, and any method to prolong life will not be achieved overnight. Drug regimen is no exception, and it is impossible to achieve the goal of health and longevity in a short time by drugs. Therefore, drugs should take effect slowly, and there should be a gradual process, which is not suitable. If you don't understand this truth, haste makes waste, which is not only useless but also harmful. This is the principle of application in drug health care, and it is also the experience of health care experts for thousands of years, which should be paid enough attention to. According to practice, the commonly used health-preserving Chinese medicines are divided into four categories: invigorating qi, nourishing blood, nourishing yin and strengthening yang. 1. The traditional Chinese medicines for invigorating qi mainly include ginseng, astragalus root, codonopsis pilosula, poria cocos, yam, coix seed, etc. 2. Blood-enriching Chinese medicines mainly include Radix Rehmanniae Preparata, Polygonum Multiflori Radix, Arillus Longan, Colla Corii Asini, Radix Angelicae Sinensis, Fructus Lycii, etc. 3. Traditional Chinese medicines for nourishing yin mainly include Adenophora adenophora, Polygonatum odoratum, Polygonatum sibiricum, Ophiopogon japonicus, Asparagus, Mulberry, Ligustrum lucidum and so on. 4. Chinese herbs for strengthening yang mainly include velvet antler, dodder, cistanche deserticola, Eucommia ulmoides, gecko, Morinda officinalis, etc. Traditional Chinese medicine tonic