How long does acetazolamide take to work? The immediate-release pills can work within 1 to 2 hours. The extended-release pills are released more slowly in the body than the immediate-release pills.

How does Diamox work for intracranial hypertension?

Acetazolamide. Acetazolamide, a carbonic anhydrase inhibitor, is thought to decrease cerebrospinal fluid production and thereby decrease ICP, leading to improved symptoms and signs of IIH.

How quickly does Diamox work for altitude sickness?

Begin this medicine 24 hours before arriving at high altitude and continue for 48 hours while at high altitude. You may continue taking Diamox up to 48 hours longer if your symptoms indicate the need for additional pills.