alexa Brinzolamide timolol fixed combination: a new ocular suspension for the treatment of open-angle glaucoma and ocular hypertension.


Journal of Membrane Science & Technology

Author(s): Holl G, Bozkurt B, Irkec M

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Abstract For the treatment of open-angle glaucoma, the most frequent cause of irreversible visual loss, fixed combinations of different topical intraocular pressure (IOP) lowering molecules have gained an important role in recent years. The use of fixed combinations reduces the number of daily instillations, which promotes adherence to the prescribed medication and diminishes the exposition of the ocular surface to preservatives. The fixed combination of brinzolamide and timolol was recently approved by the European Medicines Agency (EMEA) and is now available in several countries in Europe. It contains two molecules widely used to treat glaucoma: timolol 0.5\% (5 mg/ml) and brinzolamide 1\% (10 mg/ml) in ophthalmic suspension formulation. This fixed combination is approved for twice-daily instillation to reduce elevated IOP in open-angle glaucoma and ocular hypertension. The brinzolamide/timolol fixed combination provides an approximately 30-33\% IOP reduction from the untreated baseline IOP of 25-27 mmHg; thus, it is more potent than either of its ingredients alone. It is similarly effective but better tolerated than the dorzolamide/timolol fixed combination, which consists of molecules from the same pharmacological classes. The brinzolamide/timolol fixed combination can be used by itself as a separate therapy, but owing to the additivity of its ingredients to IOP-lowering drugs belonging to other classes, it may also be administered adjunctive to other IOP-reducing molecules, most importantly topical prostaglandin analogues. The ocular and systemic tolerance of the brinzolamide/ timolol fixed combination was reported favorable in Phase III studies, but no long-term clinical experience with this preparation is available at present. This article was published in Expert Opin Pharmacother and referenced in Journal of Membrane Science & Technology

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