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Diamox

Generic name: acetazolamide

Brand names: Diamox, Diamox Sequels

Last updated November 2, 2026 0 views
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What is Diamox?

Diamox lowers the activity of a protein in your body known as carbonic anhydrase. By blocking this protein, it can help reduce the build-up of certain fluids in the body.

Diamox is used in people with certain types of glaucoma to lower the amount of fluid in the eye, which reduces pressure inside the eye.

Diamox is also used as a diuretic ("water pill") for people with congestive heart failure, to decrease the build-up of fluid in the body. This build-up is referred to as edema.

Diamox is also used to treat certain types of seizures and to prevent or treat altitude sickness.

Diamox may also be used for reasons not mentioned in this medication guide.

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How should I take Diamox?

Follow all directions on your prescription label. Your doctor may occasionally adjust your dose to ensure you get the best results. Do not use Diamox in larger or smaller amounts or for longer than recommended.

Your dose of this medicine will depend on the condition you are treating. If you take Diamox for congestive heart failure, your doctor may advise you to skip your medication for a day. Follow your doctor's dosing instructions very carefully.

Take this medicine with a full glass of water.

While using Diamox, you may need frequent blood tests.

Diamox may be just one part of a complete treatment plan that may also include other medications. Follow your doctor's instructions very closely.

Store at room temperature away from moisture and heat. Keep the bottle tightly closed when not in use.

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Warnings

You should not use Diamox if you have cirrhosis, severe liver or kidney disease, an electrolyte imbalance, adrenal gland failure, or an allergy to Diamox or sulfa drugs.

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Before taking this medicine

You should not use Diamox if you are allergic to it, or if you have:

  • severe liver disease, or cirrhosis;
  • severe kidney disease;
  • an electrolyte imbalance (such as acidosis or low levels of potassium or sodium in your blood);
  • adrenal gland failure; or
  • an allergy to sulfa drugs.

To make sure Diamox is safe for you, tell your doctor if you have:

  • severe breathing problems;
  • angle closure glaucoma; or
  • if you also take aspirin in high doses.

It is not known whether this medicine will harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant.

Acetazolamide can pass into breast milk and may harm a nursing baby. You should not breast-feed while using this medicine.

Diamox is not approved for use by anyone younger than 18 years old.

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Diamox side effects

Get emergency medical help if you have signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Diamox may cause serious side effects. Call your doctor right away if you have:

  • blood in your urine or stools;
  • a seizure (convulsions);
  • loss of movement in any part of your body;
  • a blood cell disorder--sudden weakness or feeling unwell, fever, chills, sore throat, mouth sores, pale skin, feeling tired or short of breath, rapid heart rate, nosebleeds, bleeding gums;
  • liver problems--nausea, pain or swelling in your upper stomach, feeling tired, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes);
  • signs of metabolic acidosis--confusion, vomiting, lack of energy, irregular heartbeats;
  • signs of a kidney stone--pain in your side or lower back, blood in your urine, painful or difficult urination; or
  • severe skin reaction--fever, sore throat, swelling in your face or tongue, burning in your eyes, skin pain followed by a red or purple rash that spreads (especially on the face or upper body) and causes blistering and peeling.

Common side effects of Diamox may include:

  • nausea, vomiting, loss of appetite, diarrhea;
  • numbness or tingling, especially in your arms and legs;
  • drowsiness, confusion;
  • hearing problems, ringing in your ears;
  • increased urination; or
  • altered sense of taste.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

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What happens if I miss a dose?

Take the missed dose as soon as you remember. If it is almost time for your next scheduled dose, skip the missed dose. Do not take extra medicine to make up for the missed dose.

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What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

Diamox may affect your thinking or reactions. Be cautious if you drive or do anything that needs you to be alert.

Avoid sunlight or tanning beds. Diamox can increase your risk of sunburn. Wear protective clothing and use sunscreen (SPF 30 or higher) when you are outside.

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What other drugs will affect Diamox?

Other drugs may interact with acetazolamide, including prescription and over-the-counter medicines, vitamins, and herbal products. Inform all of your health care providers about all medicines you are currently using and any medicine you begin or stop using.

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Related medicines

Before you take this medicine: the information on this page is general and may not cover your personal circumstances. Read the label supplied with your medicine and ask a pharmacist or doctor if you are unsure, especially if you are pregnant, breastfeeding, taking other medicines or managing a long-term condition.
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Content is provided for education and is not medical advice. See our medical disclaimer.