Acetazolamide

General

Pronunciation:
(a set a zole' a mide)

Brand name:

  • Diamox® Sequels®

Why Prescribed

Acetazolamide is used to treat glaucoma, a condition in which increased pressure in the eye can lead to gradual loss of vision. Acetazolamide decreases the pressure in the eye. Acetazolamide is also used to reduce the severity and duration of symptoms (upset stomach, headache, shortness of breath, dizziness, drowsiness, and fatigue) of altitude (mountain) sickness. Acetazolamide is used with other medicines to reduce edema (excess fluid retention) and to help control seizures in certain types of epilepsy.

This medication is sometimes prescribed for other uses; ask your doctor or pharmacist for more information.

How to Use

Acetazolamide comes as a tablet and capsule to take by mouth. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take acetazolamide exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor.

If you are taking the extended-release (long-acting) form of acetazolamide (Diamox Sequels), do not crush or chew the capsules.

Special Precautions

Before taking acetazolamide,

Hypersensitivity

tell your doctor and pharmacist if you are allergic to acetazolamide, sulfa drugs, diuretics ('water pills'), or any other drugs.

Drug Interaction

tell your doctor and pharmacist what prescription and nonprescription medications you are taking, especially amphetamines, aspirin, cyclosporine (Neoral, Sandimmune), medications for depression or irregular heartbeat, diflunisal (Dolobid), digoxin (Lanoxin), diuretics ('water pills'), lithium (Eskalith, Lithobid), phenobarbital, primidone (Mysoline), and vitamins.

Precautions and Contraindications

tell your doctor if you have or have ever had heart, liver, or kidney disease; or diabetes.

Pregnancy, Fertility, Lactation

tell your doctor if you are pregnant, plan to become pregnant, or are breast-feeding. If you become pregnant while taking acetazolamide, call your doctor immediately.

Surgery Precautions

if you are having surgery, including dental surgery, tell the doctor or dentist that you are taking acetazolamide.

Drowsiness Precautions

you should know that this drug may make you drowsy. Do not drive a car or operate machinery until you know how this drug affects you.

Alcohol Precautions

remember that alcohol can add to the drowsiness caused by this drug.

Photosensitivity

plan to avoid unnecessary or prolonged exposure to sunlight and to wear protective clothing, sunglasses, and sunscreen. Acetazolamide may make your skin sensitive to sunlight.

Forgot a Dose

Take the missed dose as soon as you remember it. However, if it is almost time for the next dose, skip the missed dose and continue your regular dosing schedule. Do not take a double dose to make up for the missed one.

Side Effects

Common Side Effects

Acetazolamide may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away:

  • upset stomach
  • vomiting
  • loss of appetite

Severe Side Effects

If you experience any of the following symptoms, call your doctor immediately:

  • numbness and tingling
  • increased thirst and urination
  • drowsiness
  • headache
  • confusion
  • fever
  • rash
  • blood in urine
  • painful urination
  • yellowing of the skin or eyes
  • seizures
  • sore throat
  • unusual bleeding or bruising

If you experience a serious side effect, you or your doctor may send a report to the Food and Drug Administration's (FDA) MedWatch Adverse Event Reporting program online (http://www.fda.gov/Safety/MedWatch) or by phone (1-800-332-1088).

Storage Considerations

Keep this medication in the container it came in, tightly closed, and out of reach of children. Store it at room temperature and away from excess heat and moisture (not in the bathroom).

It is important to keep all medication out of sight and reach of children as many containers (such as weekly pill minders and those for eye drops, creams, patches, and inhalers) are not child-resistant and young children can open them easily. To protect young children from poisoning, always lock safety caps and immediately place the medication in a safe location – one that is up and away and out of their sight and reach. http://www.upandaway.org

Unneeded medications should be disposed of in special ways to ensure that pets, children, and other people cannot consume them. However, you should not flush this medication down the toilet. Instead, the best way to dispose of your medication is through a medicine take-back program. Talk to your pharmacist or contact your local garbage/recycling department to learn about take-back programs in your community. See the FDA's Safe Disposal of Medicines website (http://goo.gl/c4Rm4p) for more information if you do not have access to a take-back program.

Emergency Overdose

In case of overdose, call your local poison control center at 1-800-222-1222. If the victim has collapsed or is not breathing, call local emergency services at 911.

Additional Information

Keep all appointments with your doctor and the laboratory. Your doctor will order certain tests to check your response to acetazolamide.

Do not let anyone else to take your medication. Ask your pharmacist any questions you have about refilling your prescription.

It is important for you to keep a written list of all of the prescription and nonprescription (over-the-counter) medicines you are taking, as well as any products such as vitamins, minerals, or other dietary supplements. You should bring this list with you each time you visit a doctor or if you are admitted to a hospital. It is also important information to carry with you in case of emergencies.

Copyright

This report on medications is for your information only, and is not considered individual patient advice. Because of the changing nature of drug information, please consult your physician or pharmacist about specific clinical use.

The American Society of Health-System Pharmacists, Inc. represents that the information provided hereunder was formulated with a reasonable standard of care, and in conformity with professional standards in the field. The American Society of Health-System Pharmacists, Inc. makes no representations or warranties, express or implied, including, but not limited to, any implied warranty of merchantability and/or fitness for a particular purpose, with respect to such information and specifically disclaims all such warranties. Users are advised that decisions regarding drug therapy are complex medical decisions requiring the independent, informed decision of an appropriate health care professional, and the information is provided for informational purposes only. The entire monograph for a drug should be reviewed for a thorough understanding of the drug's actions, uses and side effects. The American Society of Health-System Pharmacists, Inc. does not endorse or recommend the use of any drug. The information is not a substitute for medical care.

AHFS® Patient Medication Information. © Copyright, 2017. The American Society of Health-System Pharmacists, Inc., 4500 East-West Highway, Suite 900, Bethesda, Maryland. All Rights Reserved. Duplication for commercial use must be authorized by ASHP.

Selected Revisions: September 15, 2017.

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