The correct formula for Psoralea Tang is Psoralea, Ginseng, Poria, Paeonia lactiflora and Atractylodes macrocephala.
Radix Psoraleae Tang is from “Treatise on Typhoid Fever”, which functions in warming menstruation and assisting yang, dispelling cold and resolving dampness. It is used for treating Shaoyin disease (a disease caused by the invasion of the Shaoyin meridian by an exogenous disease), with pain in the bones and joints of the body, coldness in the hands and feet, coldness in the back (fear of cold), and a sunken pulse.
Among them, Phellodendron is pungent and hot in nature, and has the effect of restoring yang to save the body (by warming yang qi to save fainting and unconsciousness, etc.). Atractylodes macrocephala is sweet, bitter and warm in nature, and has the effect of strengthening the spleen, warming and tonifying the middle qi, and drying and transforming dampness. Poria is sweet, light and flat in nature, and has the effect of strengthening the spleen and dispelling dampness (by tonifying the spleen to expel dampness).
In addition, Paeonia lactiflora, which is bitter, sour and slightly cold in nature, has a certain degree of effect in easing the pain (relieving more urgent pain symptoms), moisturizing the tendons and veins, and can also neutralize the dryness and heat of appendicitis. Ginseng warms yang qi and restores the body’s positive qi, and can warm spleen yang to dispel cold and dampness.
Chinese medicine emphasizes on evidence-based treatment, and one should go to the regular hospital for relevant examinations to clarify the cause of the disease and then follow the doctor’s instructions for medication. Do not use your own medicine.