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HCTZ is a medication that is prescribed for the treatment of fluid retention and high blood pressure. By increasing the amount of salt and water that the kidneys remove from the blood and decreasing blood volume, the medication can effectively control high blood pressure and help with water retention. HCTZ is sold under a variety of brand names and is also available as a generic medicine. Possible side effects of the drug may include upset stomach, dizziness, vomiting, or low blood potassium levels.
- Treating water retention (edema) due to several causes, including congestive heart failure, cirrhosis, kidney failure (renal failure), and certain medications.