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Frequently Asked Questions. What is Betimol? Betimol (timolol ophthalmic solution), 0.25% and 0.5%, is a non-selective beta-adrenergic antagonist for ophthalmic use and it is indicated in the treatment of elevated intraocular pressure in patients with ocular hypertension or open-angle glaucoma.
Combigan Â® (brimonidine/timolol) is a prescription eye drop. It contains two different active ingredients: an alpha agonist (brimonidine) and a beta blocker (timolol). It is approved to treat high eye pressure in people with chronic open-angle glaucoma or ocular hypertension.t decreases the amount of fluid (known as aqueous humor) the eye produces and increases the rate of drainage. These two effects result in lowered eye pressure. Timolol belongs to a group of drugs called beta-adrenergic blocking agents, more often known as beta blockers.