The invention provides maijun'an tablets or capsules for lowering
blood pressure which have more significant effect, safety, and no
toxicity or
side effect, thus achieving the purpose of effectively lowering the
blood pressure under the situation of taking smaller
dose. The adopted method is to respectively carry out separation and purification of active ingredients for lowering the
blood pressure in kudzuvine root and gambir
plant, thus obtaining total flavonoids of the kudzuvine root with the purity of over 80 percent and total alkaloids of the gambir
plant with the purity of over 50 percent. 8g / 500g of
hydrochlorothiazide, 260g / 500g of the total flavonoids of the kudzuvine root, 120g / 50g of total alkaloids of the gambir
plant and 112g / 500g of auxiliary agents are added for preparing tablets, pills or capsules. The concentrated maijun'an tablets or capsules of the invention do not only have small administration
dose, but also have significant
efficacy, controllable quality and easily quantified indicators, thus facilitating the standardized production of the pharmaceutical composition preparation for lowering the blood pressure.