Acetazolamide (Diamox™) is a type of medication known as a carbonic anhydrase inhibitor. It is used to treat elevated pressure in the eye, in a condition called glaucoma. It is also used as a diuretic and it can be used to treat altitude sickness. Acetazolamide has also been used in combination with other medications for the treatment of refractory seizures. It can be given as a tablet, liquid, or long-acting capsule, and is also available in intravenous (IV) form.