Antidiuretic

Antidiuretic refers to substances or medications that inhibit or reduce the production of urine by the kidneys. Antidiuretic hormone (ADH), also known as vasopressin, is a natural hormone produced by the hypothalamus and released by the pituitary gland. ADH acts on the kidney's collecting ducts to increase water reabsorption and reduce urine output.

Certain medications, such as desmopressin, can also be used as antidiuretics to help decrease urine production. This can be beneficial for conditions like diabetes insipidus, where the body is unable to properly regulate water balance, leading to excessive urination and dehydration.

Antidiuretics are also sometimes used in the treatment of fluid overload conditions, such as heart failure or liver cirrhosis, to help reduce fluid accumulation in the body and relieve symptoms.

However, the use of antidiuretics should be carefully monitored as excessive levels of ADH or overuse of antidiuretic medications can lead to water retention and potentially cause hyponatremia (low sodium levels in the blood).