acetazolamide
noun
ac·et·azol·amide
ˌa-sə-tə-ˈzō-lə-ˌmīd 
-ˈzä-
-ˈzä-
-məd
: a diuretic drug C4H6N4O3S2 used especially in the treatment of edema associated with congestive heart failure and of glaucoma and in the prevention and treatment of altitude sickness
Examples of acetazolamide in a Sentence
Recent Examples on the Web
Just under half the HAPE climbers reported taking acetazolamide, a diuretic known to climbers under the brand name Diamox that helps ward off AMS.
—
Alex Hutchinson, Outside Online, 12 Mar. 2025
If started two days prior to going up to a high elevation, acetazolamide can prevent symptoms of acute illness by speeding up the acclimatization process.
—Brian Strickland, Discover Magazine, 9 Mar. 2024
You may be given acetazolamide (Diamox) to counteract tvhe increase in pressure.
—Amanda MacMillan, Health, 31 Aug. 2023
The most commonly prescribed medication for altitude sickness is Diamox, a name brand of the generic acetazolamide.
—Katie Hill, Outdoor Life, 14 June 2023
For instance, a medication called acetazolamide may be more effective than other types of migraine treatment in preventing attacks in people who have a CACNA1A-variant form of FHM5.
—Madeleine Streets, SELF, 13 June 2022
Pack a high-altitude travel kit: Bring Ibuprofen for headaches, acetazolamide (brand name: Diamox) to help speed up acclimatization, carbohydrates that are easy to digest (think gummy bears or energy bars), sun protection, and a water bottle.
—National Geographic, 5 Oct. 2019
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Alex Hutchinson, Outside Online, 12 Mar. 2025
If started two days prior to going up to a high elevation, acetazolamide can prevent symptoms of acute illness by speeding up the acclimatization process.
—Brian Strickland, Discover Magazine, 9 Mar. 2024
You may be given acetazolamide (Diamox) to counteract tvhe increase in pressure.
—Amanda MacMillan, Health, 31 Aug. 2023
The most commonly prescribed medication for altitude sickness is Diamox, a name brand of the generic acetazolamide.
—Katie Hill, Outdoor Life, 14 June 2023
For instance, a medication called acetazolamide may be more effective than other types of migraine treatment in preventing attacks in people who have a CACNA1A-variant form of FHM5.
—Madeleine Streets, SELF, 13 June 2022
Pack a high-altitude travel kit: Bring Ibuprofen for headaches, acetazolamide (brand name: Diamox) to help speed up acclimatization, carbohydrates that are easy to digest (think gummy bears or energy bars), sun protection, and a water bottle.
—National Geographic, 5 Oct. 2019
Cite this Entry
“Acetazolamide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/acetazolamide. Accessed 31 Oct. 2025.
Copy CitationMedical Definition
acetazolamide
noun
ac·et·azol·amide
ˌas-ət-ə-ˈzōl-ə-ˌmīd
-ˈzäl-
-ˈzäl-
-məd
: a diuretic drug C4H6N4O3S2 used especially to treat glaucoma, control epileptic seizures, prevent or treat altitude sickness, and treat edema associated with congestive heart failure
Love words? Need even more definitions?
Merriam-Webster unabridged
Share