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  • Title: Fixed combinations of dorzolamide-timolol and brimonidine-timolol in the management of glaucoma.
    Author: Razeghinejad MR, Sawchyn AK, Katz LJ.
    Journal: Expert Opin Pharmacother; 2010 Apr; 11(6):959-68. PubMed ID: 20307220.
    Abstract:
    IMPORTANCE OF THE FIELD: The emergence of fixed-combination drugs for the treatment of glaucoma has, to some extent, changed the medical management of glaucoma. The potential benefits of these drugs include a reduction in the total number of drops and preservatives instilled per day and improved patient comfort factors, which may contribute to better compliance. Combination medications may also improve therapeutic efficacy and play an important role in controlling medication cost. However, the fixed dosing may be a disadvantage in some cases. AREA COVERED IN THIS REVIEW: This review describes the composition, pharmacokinetics, mode of action, efficacy, side effects, and safety profile of fixed-combination dorzolamide-timolol and fixed-combination brimonidine-timolol. WHAT THE READER WILL GAIN: Understanding of the pros, cons, and safety profile of two FDA approved fixed-combination antiglaucoma medication. TAKE HOME MESSAGE: Fixed-combination medications may be a reasonable adjunct to prostaglandins if a large drop in the intraocular pressure (IOP) is desired and adding only one medication is unlikely to reach the target IOP range. Both mentioned drugs are effective in reducing the IOP and further clinical studies will help identify differences in efficacy between the two. The clinician must make an individualized assessment of the medication's risk-benefit profile for each patient.
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