It contains four main ingredients, including hydrochlorothiazide, aminopterin, reserpine and dihydralazine, of which hydrochlorothiazide and aminopterin belong to the diuretic class of antihypertensive drugs, these two drugs can improve the body’s sodium and water retention through diuresis, thus reducing blood volume and playing a role in lowering blood pressure. The effect of catecholamines on angiotensin can also be weakened, which can also assist in lowering blood pressure. Risperdalin and dihydralazine can weaken the effect of catecholamine hormones on blood vessels in the body, thus playing a role in lowering blood pressure. BP 0 is not a mainstream antihypertensive drug at present because of more side effects. If the patient’s economic condition allows, it is recommended to apply mainstream drugs, such as using our Fodar, Bexin, Valsartan, Irbesartan and other drugs to control blood pressure well.