Hydrochlorothiazide is used as pharmaceutical grade intermediate for producing medicines of high blood pressure. This active ingredient plays significant role in controlling high blood pressure, in preventing heart attack and in dealing with kidney complications. Hydrochlorothiazide is effective in raising level of urination to get rid of excess water and salt present in human body. Special care needs to be taken for patients suffering from gout, kidney ailments, glaucoma, high calcium content in blood and low potassium level in blood before administering drugs that contain this substance. Standard of this product has been verified on the basis of its storage life, medicinal attributes, compositional accuracy and formulation method.