1 INDICATIONS & USAGE Brimonidine tartrate ophthalmic solution, 0.2% is indicated for lowering intraocular pressure in patients with open-angle glaucoma or ocular hypertension. The IOP lowering efficacy of Brimonidine tartrate ophthalmic solution, 0.2% diminishes over time in some patients. This loss of effect appears with a variable time of onset in each patient and should be closely monitored. Brimonidine Tartrate Ophthalmic Solution, 0.2% is an alpha adrenergic agonist indicated for lowering intraocular pressure (IOP) in patients with open-angle glaucoma or ocular hypertension. ( 1 )