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Acetazolamide, sold under the trade name Diamox among others, is a medication used to treat glaucoma, epilepsy, acute mountain sickness, periodic paralysis, idiopathic intracranial hypertension (raised brain pressure of unclear cause), heart failure and to alkalinize urine.
It has therefore been argued that the terms "sulfonamide allergy" or "sulfa allergy" are misleading and should be replaced by a reference to a specific drug (e.g., "cotrimoxazole allergy"). [20] Two regions of the sulfonamide antibiotic chemical structure are implicated in the hypersensitivity reactions associated with the class.
Author of The Demon Under the Microscope, a history of the discovery of the sulfa drugs; A History of the Fight Against Tuberculosis in Canada (Chemotherapy) Presentation speech, Nobel Prize in Physiology and Medicine, 1939; The History of WW II Medicine "Five Medical Miracles of the Sulfa Drugs". Popular Science, June 1942, pp. 73–78.
Cross-reactivity should not occur between medications with an aromatic amine and medications without an aromatic amine (e.g., sulfonylureas, thiazide diuretics, furosemide, and acetazolamide); therefore, these medications can be safely used in the future. [1]
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Acetazolamide is an inhibitor of carbonic anhydrase. It is used for glaucoma, epilepsy (rarely), idiopathic intracranial hypertension, and altitude sickness. For the reduction of intraocular pressure (IOP), acetazolamide inactivates carbonic anhydrase and interferes with the sodium pump, which decreases aqueous humor formation and thus lowers IOP.
An undesirable side-effect of acetazolamide is a reduction in aerobic endurance performance. Other minor side effects include a tingle-sensation in hands and feet. Although a sulfonamide, acetazolamide is a non-antibiotic and has not been shown to cause life-threatening allergic cross-reactivity in those with a self-reported sulfonamide allergy.
Those allergic to sulfonamides may be allergic to dorzolamide. [3] [5] Use is not recommended in pregnancy or breastfeeding. [5] It is a carbonic anhydrase inhibitor and works by decreasing the production of aqueous humor. [3] Dorzolamide was approved for medical use in the United States in 1994. [3] It is available as a generic medication. [5]