Acetazolamide blocks an enzyme called carbonic anhydrase. The result is less fluid produced inside the eye, more salt and water passed by the kidneys, and a change in blood chemistry that helps the body adjust to altitude.

What Acetazolamide Is Used For

Lowering pressure inside the eye in glaucoma
Preventing and treating altitude sickness
Fluid retention, in selected cases
Certain types of epilepsy, as an add on

Common Side Effects

Tingling in the fingers, toes and around the mouth
Passing urine more often
A metallic taste, notably with fizzy drinks
Tiredness and loss of appetite

Precautions

Tell your doctor if you have kidney or liver disease, or a sulfa allergy. Potassium and kidney function may need checking on longer courses. Drink enough water, and report a rash, unusual bruising or persistent vomiting rather than continuing the tablets.

This page is general information only. It is not a substitute for advice from your doctor or pharmacist, and it does not include dosage. Always follow the directions given to you and read the leaflet inside the pack.