Drug Detail:Methazolamide (Methazolamide [ meth-a-zole-a-mide ])
Drug Class: Carbonic anhydrase inhibitors
Usual Adult Dose for Glaucoma
50 to 100 mg orally 2 or 3 times a day
Comments: May be used concomitantly with miotic and osmotic agents.
Use: Treatment of ocular conditions where lowering intraocular pressure is likely to be of therapeutic benefit, such as chronic open-angle glaucoma, secondary glaucoma, and preoperatively in acute angle-closure glaucoma.
Renal Dose Adjustments
Contraindicated in marked renal dysfunction
Liver Dose Adjustments
Contraindicated in marked liver dysfunction
Precautions
Safety and efficacy have not been established in patients younger than 18 years.
Consult WARNINGS section for additional precautions.
Dialysis
Data not available
Other Comments
Monitoring:
- Monitor for hematologic reactions common to all sulfonamides; perform a CBC and platelet count prior to initiating therapy and regularly thereafter.
- Monitor serum electrolytes periodically.
Patient advice:
- Advise patients to seek immediate medical attention if any of the following sulfonamide reactions occur: anaphylaxis, fever, rash (including erythema multiforme, Stevens-Johnson syndrome, toxic epidermal necrolysis), crystalluria, renal calculus, bone marrow depression, thrombocytopenic purpura, hemolytic anemia, leukopenia, pancytopenia and agranulocytosis.
- Inform patients of the risk associated with coadministration of this drug and high-dose aspirin (anorexia, tachypnea, lethargy, coma, and death).