Acetazolamide is a carbonic anhydrase inhibitor, prescribed for glaucoma, edema due to congestive heart failure, epileptic seizure, idiopathic intracranial hypertension (a.k.a. pseudotumor cerebri), cystinuria, periodic paralysis, central sleep apnea and dural ectasia. It is also used to prevent and reduce the symptoms of altitude or acute mountain sickness and moderate to severe metabolic or respiratory alkalosis. Acetazolamide reduces the activity of carbonic anhydrase protein.
Irbesartan is an angiotensin II receptor blocker (ARB), prescribed for high blood pressure either alone or combined with other medications. It is also used to treat kidney disorders in patients with type 2 diabetes (condition in which the body does not use insulin normally and therefore cannot control blood sugar). Irbesartan relaxes blood vessels and helps to lower blood pressure.
Nebivolol is a beta-blocker, prescribed for hypertension either alone or combined with other medications. It is also used for some cases of heart failure. It decreases the amount of blood pumped out from heart. This helps to decrease blood pressure and reduces the workload on the heart.