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PURITE® is a proprietary, registered preservative widely used in medical and cosmetic applications. This stabilized solution of oxychloro complexes is recognized for its broad-spectrum antimicrobial properties, making it effective in preventing contamination and preserving the integrity of formulations. Due to its safety profile and efficacy, PURITE® is particularly suitable for sensitive applications, such as ophthalmic solutions and personal care products.
PURITE® is a stabilized oxychloro complex (SOC) consisting of chlorine dioxide, chlorite, and chlorate ions.
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PURITE® is an advanced preservative solution offering effective, broad-spectrum antimicrobial protection with a gentle safety profile. Its ability to decompose into environmentally safe byproducts, coupled with its suitability for sensitive applications, makes it a valuable choice in ophthalmic, cosmetic, and personal care formulations.
References__________________________________________________________________________
Messmer EM. Preservatives in ophthalmology. Ophthalmologe. 2012 Nov;109(11):1064-70.
Abstract. Preservatives are a legal requirement for eye drops in multidose containers. Moreover, they are necessary for stabilization and intraocular penetration for a number of ophthalmic preparations. Most preservatives act in a relatively unspecific manner as detergents or by oxidative mechanisms and thereby cause side effects at the ocular surface. They may also affect the lens, trabecular meshwork and the retina. Benzalkonium chloride is the most commonly used preservative in ophthalmology and is more toxic than other or newer preservatives, such as polyquaternium-1 (Polyquad), sodium perborate, oxychloro-complex (Purite®) and SofZia. Preservative-free topical medication is highly recommended for patients with ocular surface disease, frequent eye drop administration, proven allergy to preservatives and contact lens wear.
Kahook MY, Rapuano CJ, Messmer EM, Radcliffe NM, Galor A, Baudouin C. Preservatives and ocular surface disease: A review. Ocul Surf. 2024 Oct;34:213-224. doi: 10.1016/j.jtos.2024.08.001.
Abstract. Ocular surface disease (OSD) is a complex condition that can cause a range of symptoms (e.g, dryness, irritation, and pain) and can significantly impact the quality of life of affected individuals. Iatrogenic OSD, a common finding in patients with glaucoma who receive chronic therapy with topical ocular antihypertensive drugs containing preservatives such as benzalkonium chloride (BAK), has been linked to damage to the ocular surface barrier, corneal epithelial cells, nerves, conjunctival goblet cells, and trabecular meshwork. Chronic BAK exposure activates inflammatory pathways and worsens symptoms, compromising the success of subsequent filtration surgery in an exposure-dependent manner. In eyes being treated for glaucoma, symptomatic treatment of OSD may provide some relief, but addressing the root cause of the OSD often necessitates reducing or, ideally, eliminating BAK toxicity. Strategies to decrease BAK exposure in patients with glaucoma encompass the use of preservative-free formulations or drugs with alternative and less toxic preservatives such as SofZia®, Polyquad, potassium sorbate, or Purite®. Though the benefits of these alternative preservatives are largely unproven, they might be considered when financial constraints prevent the use of preservative-free versions. For patients receiving multiple topical preserved drugs, the best practice is to switch to nonpreserved equivalents wherever feasible, regardless of OSD severity. Furthermore, nonpharmacological approaches, including laser or incisional procedures, should be considered. This review explores the effects of BAK on the ocular surface and reviews strategies for minimizing or eliminating BAK exposure in patients with glaucoma in order to significantly improve their quality of life and prevent complications associated with chronic exposure to BAK. Copyright © 2024 The Authors. Published by Elsevier Inc. All rights reserved.
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