Hydrochlorothiazide is often abbreviated as HCTZ is a medication commonly used to treat high blood pressure (hypertension) and to manage fluid retention (edema) in various conditions. Hydrochlorothiazide is classified as a thiazide diuretic which means it helps the body eliminate excess salt and water by increasing urine production. By reducing fluid volume.Hydrochlorothiazide can lower blood pressure and alleviate edema. Buy high quality Hydrochlorothiazide from Molsyns Research. Molsyns Research is one of the leading manufacturer and exporter of Hydrochlorothiazide