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  • Title: Prolonged effectiveness of bepotastine besilate ophthalmic solution for the treatment of ocular symptoms of allergic conjunctivitis.
    Author: Williams JI, Kennedy KS, Gow JA, Torkildsen GL, Abelson MB, Gomes PJ, McNamara TR, Bepotastine Besilate Ophthalmic Solutions Study Group.
    Journal: J Ocul Pharmacol Ther; 2011 Aug; 27(4):385-93. PubMed ID: 21649522.
    Abstract:
    PURPOSE: This clinical trial evaluated the safety and effectiveness of bepotastine besilate ophthalmic solutions 1.0% and 1.5% compared with placebo for the treatment of ocular itching and conjunctival hyperemia (redness) using the conjunctival allergen challenge (CAC) model of allergic conjunctivitis when dosed 16 h before a CAC test. METHODS: Subjects with a history of allergic conjunctivitis were assigned to receive placebo or bepotastine besilate ophthalmic solution 1.0% or 1.5% in a single-center, randomized, placebo-controlled clinical trial. Eligible subjects (n=107) aged 10 years and older with a history of allergic conjunctivitis who had a reproducible positive reaction to a CAC were enrolled and dosed with test agent. The primary trial objectives included assessment of ocular itching and conjunctival redness at 16 h after instillation of test agent. Reductions in several CAC-induced secondary symptoms and signs of allergic conjunctivitis were also evaluated for tearing, ciliary and episcleral redness, eyelid swelling, chemosis, and mucous discharge. RESULTS: Bepotastine besilate ophthalmic solution 1.5% demonstrated clinical effectiveness and statistical significance in comparison to placebo for the reduction in CAC-induced ocular itching 16 h after drug administration. Bepotastine besilate ophthalmic solution 1.0% also achieved statistical significance in comparison to placebo for reducing ocular itching at all time points 16 h after dosing. Statistically significant reduction (P≤0.05) was additionally seen in this CAC test for the secondary ocular efficacy variable of allergen-induced tearing for bepotastine besilate ophthalmic solution 1.5%. No clinical benefit was seen for reducing the coprimary efficacy variable of conjunctival redness with the CAC model of allergic conjunctivitis. CONCLUSIONS: Bepotastine besilate ophthalmic solution 1.5% produced predefined clinically meaningful reduction in CAC-induced ocular itching and tearing in a single-site trial and was more effective than bepotastine besilate ophthalmic solution 1.0% and placebo for reducing ocular itching in a CAC test 16 h after dosing.
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