Acetazolamide Side Effects and Management

Introduction to Side Effects

The American Academy of Ophthalmology recommends that patients with known sulfonamide allergy should not use acetazolamide due to the risk of hypersensitivity reactions 4
The European Respiratory Society notes that tinnitus and vertigo are recognized adverse effects of acetazolamide 2
Cognitive slowing and depression can occur in patients taking acetazolamide, particularly concerning for patients requiring mental acuity, as reported by the European Respiratory Review 2

Paresthesias are the most frequent side effect, occurring in approximately 1 in 2-3 patients, with significantly increased risk at higher doses, according to Praxis Medical Insights 1
Dysgeusia (metallic taste) affects approximately 1 in 18 patients, with dose-dependent risk increasing at higher doses, as noted by Praxis Medical Insights 1
Nausea, vomiting, and diarrhea are well-documented side effects of acetazolamide, as reported by Praxis Medical Insights 1
Fatigue occurs in approximately 1 in 11 patients, with a trend toward dose-dependence, according to Praxis Medical Insights 1

Contraindicated in patients with known sulfonamide allergy, as recommended by the American Academy of Ophthalmology 4
Contraindicated in patients with aplastic anemia or sickle cell disease, as noted by the American Academy of Ophthalmology 4
Electrolyte imbalances, particularly hypokalemia and hyperchloremia, are serious adverse effects requiring monitoring, as reported by Praxis Medical Insights 1
Renal calculi occur rarely but are a recognized complication, according to the American Academy of Ophthalmology 4

Pregnancy is a contraindication due to potential teratogenic risks, as recommended by Praxis Medical Insights 1
FDA Pregnancy Category C, as noted by the American Academy of Ophthalmology 4
Kidney stones are a contraindication for acetazolamide use, as reported by the American Academy of Ophthalmology 4
Marked hepatic damage or severe renal insufficiency when renal function cannot be monitored are contraindications, as noted by the Journal of the American Academy of Dermatology 5

Start with low doses (250-500 mg daily) and titrate gradually to minimize initial side effect burden, as recommended by Praxis Medical Insights 1
Discontinue immediately if signs of hypersensitivity or serious reactions occur, as noted by the American Academy of Ophthalmology 4

Monitor serum electrolytes, particularly potassium and chloride, as recommended by Praxis Medical Insights 1
Monitor renal function in patients with renal insufficiency, as noted by the Journal of the American Academy of Dermatology 5