Acetazolamide is available in oral tablet, capsule and injection form

Oral

Diuresis
Adult: 250-375 mg once daily or on alternate days.

Preoperative management of angle-closure glaucoma
Adult: 250-1000 mg daily in divided doses.
Child: (1 month to 12 years): 10-20 mg per kg body weight daily. (Maximum dose: 750 mg daily, in 2-4 divided doses.)

Adjunct in open-angle glaucoma
Adult: 250-1000 mg daily in divided doses.
Child: (1 month to 12 years): 10-20 mg per kg body weight daily. (Maximum dose: 750 mg daily, in 2-4 divided doses.)

Epilepsy
Adult: 250-1000 mg daily in divided doses (alone or with other antiepileptic drug)
Child: (1 month to 12 years): Initially: 2.5 mg per kg body weight two-three times a day
Maintenance: 5-7 mg per kg body weight two-three times day (Maximum dose: 750 mg daily, in 2-4 divided doses.)

Prophylaxis of high-altitude disorders
Adult: 500-1000 mg daily in divided doses

Intravenous

Chronic open-angle glaucoma

Adult: 0.25-1 g every 24 hours, usually in divided doses (As an add-on therapy)

Acute closed angle glaucoma
Adult: 250-500 mg (Maximum: 1 g daily)

Epilepsy
Adult: 8-30 mg per kg body weight daily in divided doses.