Atractylodes macrocephala does not have the effect of raising blood pressure. Atractylodes macrocephala is sweet, bitter and warm in nature, and belongs to the spleen and stomach meridians. It has the effects of strengthening the spleen and benefiting qi, drying dampness and inducing diuresis (drying out dampness and reducing water-dampness in the body), stopping sweating, and stabilizing the fetus. It is used in treating spleen deficiency with little food, abdominal distension and diarrhea, phlegm-drinking palpitation (vertigo and palpitation caused by phlegm-drinking evil), edema, spontaneous sweating (involuntary sweating during the daytime, aggravated by a little movement), and restlessness of the fetus. Atractylodes macrocephala is warm in nature and should not be taken in large quantities for external wind-heat or warm heat, solid heat, yin deficiency (deficiency of yin essence in the body, hyperactive fire), blood deficiency, blood heat, etc. It is not suitable to be taken in large quantities as a single medicine; Atractylodes macrocephala is bitter in taste and is good at drying dampness and inducing diuresis, so it is forbidden to take large quantities of a single medicine for those who have insufficient yin in their stomachs (insufficient yin in their stomachs), insufficient fluid, constipated stools, and yin deficiency and internal heat. It is recommended to use the medicine under the guidance of a doctor.