Tolvaptan is a medication used to treat low sodium levels in the blood. When searching for alternative terms for tolvaptan, there are several options depending on context. Some synonyms include vasopressin receptor antagonists, antidiuretics, and diuretics. These terms all refer to medications that regulate the body's water balance, and may be used interchangeably with tolvaptan in certain situations. Other related terms may include osmotic diuretics and loop diuretics, which work by increasing urine output to balance fluid levels in the body. Whatever term is used, it's important to remember to consult with a healthcare professional to determine the most appropriate medication for your individual needs.