NCI Drug Dictionary

The NCI Drug Dictionary contains technical definitions and synonyms for drugs/agents used to treat patients with cancer or conditions related to cancer. Each drug entry includes links to check for clinical trials listed in NCI's List of Cancer Clinical Trials.

acetazolamide sodium
The sodium salt of acetazolamide, a nonbacteriostatic sulfonamide derivative with diuretic and anticonvulsant properties. Acetazolamide is a potent inhibitor of carbonic anhydrase that plays an important role in the control of fluid secretion. Inhibition of this enzyme in the kidney results in a reduction in the availability of hydrogen ions for active transport in the renal tubule lumen, thereby leading to increased bicarbonate and cation excretion, and increased urinary volume. Reduced bicarbonate level in circulation induces reduction of intraocular pressure via osmotic mechanism. The anticonvulsant activity of acetazolamide may contribute to inhibition of carbonic anhydrase in the CNS, which decreases carbon dioxide tension in the pulmonary alveoli, thus increasing arterial oxygen tension. Check for active clinical trials using this agent. (NCI Thesaurus)

US brand name:Diamox
Chemical structure:N-(5-(aminosulfonyl)-1,3,4-thiadiazol-2-yl)acetamide monosodium