Deficiency, simply speaking, is weakness, that is, a certain place or aspect of the body is insufficient. Many times, it refers to the pathological state that "less fire" is insufficient and the yang is not enough to maintain the needs of life, which leads to physical weakness. Of course, from the material point of view, it can refer to the deficiency of qi, blood and body fluid, and from the yin and yang point of view, it can be yin deficiency and yang deficiency. And from the position, it can be the deficiency of five internal organs such as spleen deficiency and kidney deficiency, so we must first understand the essence of deficiency.

The tonic mentioned in Chinese medicine is to treat deficiency syndrome with tonic medicine. Su Wen's Theory of Three Supplements and Nine Stages: "Deficiency supplements it, but in fact it is eliminated."

Deficiency refers to the lack of healthy qi in the body, in fact, it refers to more pathogenic factors in the body. The eight categories of TCM mainly refer to yin, yang, exterior, interior, cold, heat, deficiency and excess. The virtual and real in these eight categories are the two main programs to distinguish the rise and fall of evil. Only by distinguishing between excess and deficiency can we find the correct basis for strengthening the body resistance or eliminating evil. Generally speaking, the empty ones should be replenished and the full ones should be discharged.

According to the theory of traditional Chinese medicine, deficiency of vital qi is generally divided into qi deficiency, blood deficiency and yin and yang deficiency. Clinical specific treatment and conditioning need to further clarify the deficiency of qi and blood or a certain viscera, and then specific medication.

Qi deficiency is generally spleen and lung qi deficiency, which can be taken orally, such as Buzhong Yiqi Pill, Shen Ling Baizhu Powder and Yupingfeng Powder. Blood deficiency is mostly due to deficiency of both heart and spleen or deficiency of heart and blood. Ginseng Guipi Pill and Lvjiao Buxue Granule can be taken orally.

In short, in terms of conditioning, it is necessary to analyze the specific symptoms. It is suggested that it is best to find Chinese medicine and use medicine according to the condition of tongue pulse.

Deficiency without tonic means that the patient is physically weak and cannot accept tonic. Deficiency of the spleen and stomach is the main reason for "deficiency without tonic" because the digestive function of the stomach and the transport function of the spleen are poor, and tonic drugs are mostly greasy, which can not be well digested and absorbed after taking, but increase the burden on the gastrointestinal tract and cause indigestion and other symptoms.