Wu Mei Wan is from Zhong Jing's "Treatise on Typhoid Fever - Discussing and Treating Sycophantic Yin Disease". This formula is cold and heat, tonic and convergence of all ready, its efficacy of warm organs and roundworms, clinical in addition to the treatment of roundworm syncope, on the cold and heat of the wrong mix, the deficiency of positive qi with a variety of miscellaneous diseases can always be successful.

It is worth pointing out that, throughout the ages, the writings of doctors have been listed as "insect repellent". After the Qing Dynasty, this view is more obvious, especially Wang Ang's "Tangtou Gezhi", "Medical Fang Jiejie" and other books, will be listed as "insecticide pill" of the first party. Chen Xiuyuan's medical enlightenment book "medical three-word classic" also said that the treatment of "insect pain" to use the plum pill. Another example is "medical prescription" pointed out that: "the flavor of the plum sour, roundworms get soft; Lian, cypress flavor bitter, roundworms get ambush, Shu pepper, fine Xin flavor, roundworms get death. Today's Chinese medicine colleges and universities, "Formulary" handout, still follows the classification method of Wang Ang, and add a note: "Wu Mei pill for the main treatment of insect diseases. Lecture notes also outline the list of this formula for the "insecticide agent", as for the mention of clinical changes in the use, but also according to its general formula of addition and subtraction of tailoring only.

In fact, Wu Mei pill is one of the main treatment of syncopal disease, "the theory of typhoid fever" will be listed in the roundworm syncopal article, is not specifically designed to kill worms and set up, but used to adjust the syncopal disease of cold and heat mismatch of the disease, harnessing roundworms is only one of the role of the Wu Mei pill. Qing - Ke Qin Yun: "Zhongjing this formula, this is the syncopated yin evidence of the method, shu and compiled in the spitting roundworm article, people do not know the main syncopated yin formula, the view of its medicine and the evidence in line with the ...... is not only spitting roundworms a symptom of the right?" It can be said that the word breaks. Wu Jutong more clearly pointed out that the plum pill is "the treatment of syncope, prevention of Shaoyang, Yangming protection of the whole agent." The Neijing cloud: "syncope yin above, wind main." Tang Rongchuan said: "syncope yin of cold and heat, always because of the wind and fanning also, so the use of wu mei pills convergence to take the wind, and the rest of the medicine and adjust the cold and heat."" The wind evil originally has no fixed body, if the sun advances and the yin retreats, the wind from the yang and entrapment of heat, presenting syncope more heat and less and no appetite for food, food is vomiting roundworms, as well as abdominal pain and discharges and other evidence. According to the formula of Wu Mei Pill, cold and temperature are used together, and both tonic and diarrhea are applied, which is based on the characteristics of syncopal disease. Qing - Ke Yun Bo discusses the horse plum pill cubic general idea pointed out: "six meridians only syncope yin is difficult to treat, the yin, its standard heat, its body wood, its use of fire, it must be ambush its main, and the first of its due to ...... zhong jing cubic, all to pungent, sweet and bitter flavors for the king, do not use acid collection of the product, and this use of the person to syncope yin main liver and wood ear! ...... Jun umeboshi's big acid, is the ambush of its main also; Zuo Huanglian diarrhea and remove plaque, Huangbai nourish the kidney to remove thirst, the first of its cause also; the mother of the liver kidney, pepper attached to warm the kidney, then the fire has to return to the liver to get its nourishment, is the solidification of its base also ......