There is no such Chinese herbal formula as Wu Zhi San. The similarly named Wu Zhi San consists of the Chinese herbs Platycodonopsis, Cinnamomum, Citrus aurantium, Ephedra, and Huperzia, which have the effect of smoothing away qi and resolving phlegm.
Wuji San can be used to treat internal cold injury, external wind-cold syndrome, headache and body pain, body heat without sweating, chest fullness (chest distension and discomfort), bad food, neck and back constriction (due to wind-cold and body spasms, convulsions), abdominal pain and vomiting, as well as women’s blood and qi disharmony, menstrual disorders, pain in the heart and abdomen, and so on. The contraindications and adverse reactions of Wuji San are not clear, need to be used under the guidance of a professional physician to identify the evidence, do not use the drug on your own.