Hydrochlorothiazide is one of a group of Thiazide or thiazide-like diuretics that are commonly used to treat hypertension. Hydrochlorothiazide is also used to help reduce the amount of water in the body by increasing the flow of urine.
Be sure to tell your doctor of any allergies you have whether it is to medication or food, preservatives, or dyes. Tell your doctor immediately if you are, or become pregnant, or are breastfeeding, as Hydrochlorothiazide may cause unwanted side effects in your child. Also, tell your doctor of any other medications you are taking, including vitamins and supplements, and any medical conditions you may have.
It is very important that you take this medicine exactly as your doctor tells you to. Do not take more or less medicine than directed. If you miss a dose of this medicine, take it as soon as you remember, unless it is almost time for your next dose. Do NOT double doses.
Talk with your doctor as soon as possible if any of the following side effects occur: black, tarry stools; blood in urine or stools; cough or hoarseness; fever or chills; joint pain; lower back or side pain; painful or difficult urination; pinpoint red spots on skin; skin rash or hives; stomach pain with nausea and vomiting; unusual bleeding or bruising; or yellow eyes or skin.
Hydrochlorothiazide is a diuretic and antihypertensive. It is the 3,4-dihydro derivative of chlorothiazide. Its chemical name is 6-chloro-3,4-dihydro-2H-1,2,4- benzothiadiazine-7-sulfonamide 1, 1-dioxide. Its empirical formula is C7H8ClN3O4S2. It is a white, or practically white, crystalline powder with a molecular weight of 297.72, which is slightly soluble in water, but freely soluble in sodium hydroxide solution. Hydrochlorothiazide is supplied as 25 mg, 50 mg and 100 mg tablets for oral use.
Hydrochlorothiazide has the following structural formula: