What is the most important information I should know about acetazolamide?
Call your doctor immediately if you experience a sore throat, fever, unusual bleeding or
bruising, tingling or tremors in your hands or feet, pain in your side or groin, or a rash. These
symptoms could be early signs of a serious side effect.
Use caution when driving, operating machinery, or performing other hazardous
activities. Acetazolamide may cause
dizziness or
drowsiness. If you experience dizziness or
drowsiness, avoid these activities.
Avoid prolonged exposure to sunlight. Acetazolamide may increase the sensitivity of
your skin to sunlight. Use a sunscreen and wear protective clothing when exposure to the sun is
unavoidable.
What is acetazolamide?
Acetazolamide is a carbonic anhydrase inhibitor. Carbonic anhydrase is a protein in your
body. Acetazolamide reduces the activity of this protein.
Acetazolamide is used to treat glaucoma and to treat and to prevent acute mountain sickness
(altitude sickness). It is also used as a part of some treatment plans for congestive heart failure and
seizure disorders.
Acetazolamide may also be used for purposes other than those listed in this medication
guide.
Who should not take acetazolamide?
Tell your doctor if you have ever had an allergic reaction to a sulfa-based drug such as
sulfamethoxazole (e.g., Bactrim, Septra, Gantanol). Acetazolamide is also a sulfa-based drug, and
you may have a similar reaction to it.
Before taking acetazolamide, tell your doctor if you
You may not be able to take acetazolamide, or you may require a lower
dose or special monitoring during treatment if you have any of the conditions listed above.
Acetazolamide is in the FDA pregnancy category C. This means that it is not known
whether acetazolamide will harm an unborn baby. Do not take acetazolamide without first talking to
your doctor if you are pregnant.
Acetazolamide passes into breast milk. It is not known whether acetazolamide will affect
a nursing infant. Do not take acetazolamide without first talking to your doctor if you are
breast-feeding a baby.
How should I take acetazolamide?
Take acetazolamide exactly as directed by your doctor. If you do not understand these
directions, ask your pharmacist, nurse, or doctor to explain them to you.
Take each dose with a full glass of water.
Take acetazolamide with food if it upsets your
stomach.
Store acetazolamide at room temperature away from moisture and heat.
What happens if I miss a dose?
Take the missed dose as soon as you remember. However, if it is almost time for your next
dose, skip the missed dose and take only your next regularly scheduled dose. Do not take a double dose of this medication.
What happens if I overdose?
Seek emergency medical attention.
Symptoms of an acetazolamide overdose are not well known, but the following symptoms
might be expected: drowsiness, decreased appetite, nausea, vomiting, dizziness, numbness or
tingling, shaking, and ringing in the ears.
What should I avoid while taking acetazolamide?
Use caution when driving, operating machinery, or performing other hazardous
activities. Acetazolamide may cause dizziness or drowsiness. If you experience dizziness or
drowsiness, avoid these activities.
Avoid prolonged exposure to sunlight. Acetazolamide may increase the sensitivity of
your skin to sunlight. Use a sunscreen and wear protective clothing when exposure to the sun is
unavoidable.
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