It's often used along with other antiseizure medications. How long does acetazolamide take to work? The immediate-release pills can work within 1 to 2 hours.

How does acetazolamide make you feel?

Dizziness, lightheadedness, or increased urination may occur, especially during the first few days as your body adjusts to the medication. Blurred vision, dry mouth, drowsiness, loss of appetite, nausea, vomiting, diarrhea, or changes in taste may also occur.

How effective is acetazolamide?

Acetazolamide at doses of 250 mg, 500 mg, and 750 mg were all effective in preventing acute mountain sickness above 3000 m, with a combined odds ratio of 0.36 (95% confidence interval 0.28 to 0.46).