HCTZ (hydrochlorothiazide or HCT) is a prescription medication that is sold under a number of brand names, including:
It is also available in generic form. HCTZ has been licensed to treat the following conditions:
- High blood pressure (hypertension)
- Water retention (edema) caused by estrogen, corticosteroids, or various conditions, including:
HCTZ belongs to a class of drugs known as diuretics (commonly referred to as "water pills"). It works by increasing the amount of salt and water that the kidneys remove from the blood and decreasing blood volume.
The most common side effects of HCTZ seen in people with high blood pressure include:
- Low blood potassium levels (hypokalemia) or other electrolyte imbalances
- Upset stomach (nausea) or vomiting.
(To learn more about the uses, benefits, and effects of this diuretic, click HCTZ.)