Timolol is a beta blocker medication used either by mouth or as eye drops.[1][2] As eye drops it is used to treat increased pressure inside the eye such as in ocular hypertension and glaucoma.[1] By mouth it is used for high blood pressure, chest pain due to insufficient blood flow to the heart, to prevent further complications after a heart attack, and to prevent migraines.[2] Timolol is a non-selective beta blocker. See also Timolol, Beta-2 Adrenergic Receptor, and G-protein coupled receptors.
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