April 20, 2014
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Drug Factsheets

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Acetazolam

(acetazolamide)

DIN (Drug Identification Number)

00295019 ACETAZOLAM 250 MG TAB

How does Acetazolam work? What will it do for me?

Acetazolamide belongs to the class of medications called carbonic anhydrase inhibitors. It is used to reduce the pressure in the eye in people with certain types of glaucoma. It is also sometimes used to treat epilepsy.

Fluid is constantly being formed and drained out of the eye. When this fluid does not drain out of the eye properly or too much fluid is produced, the pressure inside the eye increases. Acetazolamide works by reducing the amount of fluid produced by the eye and central nervous system. Its effects on the central nervous system are also believed to help treat some forms of epilepsy that are caused by higher fluid levels in the central nervous system.

This medication may be available under multiple brand names and/or in several different forms. Any specific brand name of this medication may not be available in all of the forms or approved for all of the conditions discussed here. As well, some forms of this medication may not be used for all of the conditions discussed here.

Your doctor may have suggested this medication for conditions other than those listed in these drug information articles. If you have not discussed this with your doctor or are not sure why you are taking this medication, speak to your doctor. Do not stop taking this medication without consulting your doctor.

Do not give this medication to anyone else, even if they have the same symptoms as you do. It can be harmful for people to take this medication if their doctor has not prescribed it.

How should I use Acetazolam?

Recommended doses of acetazolamide vary depending on the condition being treated and the circumstances.

For glaucoma, the usual recommended dose is 250 mg by mouth 1 to 4 times a day. In some types of glaucoma, the dosage may be 250 mg every 4 hours.

For epilepsy, the usual recommended dose is 375 mg to 1,000 mg daily by mouth, usually in divided doses so that it's taken 1 to 4 times a day.

Many things can affect the dose of medication that a person needs, such as body weight, other medical conditions, and other medications. If your doctor has recommended a dose different from the ones listed here, do not change the way that you are taking the medication without consulting your doctor.

It is important that this medication be taken exactly as prescribed by your doctor.

If you miss a dose, take it as soon as possible and continue with your regular schedule. If it is almost time for your next dose, skip the missed dose and continue with your regular dosing schedule. Do not take a double dose to make up for a missed one. If you are not sure what to do after missing a dose, contact your doctor or pharmacist for advice.

Store this medication at room temperature, protect it from light and moisture, and keep it out of the reach of children.

Do not dispose of medications in wastewater (e.g. down the sink or in the toilet) or in household garbage. Ask your pharmacist how to dispose of medications that are no longer needed or have expired.





What form(s) does Acetazolam come in?

This medication is available as a 250 mg tablet.

Who should NOT take Acetazolam?

Do not take acetazolamide if you:

  • are allergic to acetazolamide or any ingredients of the medication
  • have low levels of sodium or potassium in your blood
  • have severe kidney or liver dysfunction

If you have chronic noncongestive angle-closure glaucoma, you should not be using acetazolamide for a long period of time.

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