Methyclothiazide is a medication used to treat high blood pressure and reduce swelling. There are several synonyms for this drug, including Metahydrin, Aquatensen, and Enduron. These names are used interchangeably and all refer to the same medication. Other similar medications that may be prescribed include chlorthalidone, hydrochlorothiazide, and indapamide. Each of these drugs works by reducing the amount of water and salt in the body, which helps to lower blood pressure and reduce swelling. It is important to note that while these drugs are effective at treating high blood pressure, they can also cause side effects such as dizziness, nausea, and dehydration. Patients should always consult with their doctor before starting any new medication.