Thiazide is a class of medications commonly used to treat high blood pressure and fluid retention. They work by helping the kidneys remove excess sodium and water from the body, which reduces blood volume and lowers blood pressure. Thiazides are often prescribed as a first-line treatment for hypertension due to their effectiveness and relatively low cost. Common examples of Thiazide diuretics include hydrochlorothiazide and chlorthalidone. While generally safe, they can cause side effects such as electrolyte imbalances, increased urination, and, in some cases, dizziness. Regular monitoring by a healthcare provider is important to ensure safe and effective use.