Hydrochlorothiazide

Hydrochlorothiazide is a medication that is prescribed for the treatment of high blood pressure and fluid retention. The medicine is a type of diuretic that works by increasing the amount of salt and water that the kidneys remove from the blood, which causes a decrease in blood volume. Hydrochlorothiazide comes in both capsule and tablet form and is available in a number of strengths. Potential side effects of the medication may include low blood potassium levels or other electrolyte imbalances, dizziness, upset stomach, and vomiting.

 

What Is Hydrochlorothiazide?

Hydrochlorothiazide (HCTZ) is a prescription medicine that is used to treat high blood pressure and fluid retention. It is part of a class of medicines known as diuretics.
 
Hydrochlorothiazide is sold under a number of brand names, including Esidrix®, HydroDIURIL®, Microzide®, and Oretic®. It is also available as a generic. Hydrochlorothiazide is sometimes referred to as HCTZ or HCT for short.
 
Hydrochlorothiazide may be used in children and infants with high blood pressure or fluid retention, although it has not been thoroughly studied for this age group. Be sure to talk to your healthcare provider about the benefits and risks of using hydrochlorothiazide in children and infants.
 

Who Makes Hydrochlorothiazide?

Several manufacturers make brand-name hydrochlorothiazide. Generic hydrochlorothiazide is also made by multiple generic manufacturers.
 

Hydrochlorothiazide Uses

Specific uses of hydrochlorothiazide include:
 
 

 

(Click What Is Hydrochlorothiazide Used For? for more information on these hydrochlorothiazide uses, including possible off-label uses.)
 
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Written by/reviewed by: Kristi Monson, PharmD; Arthur Schoenstadt, MD
Last reviewed by: Kristi Monson, PharmD;