Alphagan (generic name: Brimonidine) is an eye medication.
Alphagan is indicated for lowering intraocular pressure (IOP) in patients with open-angle glaucoma or ocular hypertension (high blood pressure).
Lowering IOP is the only treatable risk factor to prevent glaucomatous vision loss.
Alphagan is an alpha-3 adrenergic agonist. It works by lowering the fluid pressure inside the eyeball and increasing fluid drainage from the eyeball. Alphagan reduces the amount of fluid in the eye, which decreases pressure inside the eye.