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  • Title: Levocetirizine and rupatadine in chronic idiopathic urticaria.
    Author: Johnson M, Kwatra G, Badyal DK, Thomas EA.
    Journal: Int J Dermatol; 2015 Oct; 54(10):1199-204. PubMed ID: 25521304.
    Abstract:
    BACKGROUND: Chronic idiopathic urticaria (CIU) is a common dermatological condition. Its pathogenesis involves mainly histamine and also other mediators, including platelet-activating factor (PAF) and tumor necrosis factor-α (TNF-α). In the absence of an exact etiology, H1 -antihistaminics are the mainstay of treatment. Levocetirizine is widely prescribed for CIU. Rupatadine, a newer antihistaminic, has PAF receptor antagonist activity and has shown anti-TNF-α activity in vitro. These additional anti-inflammatory effects may improve its efficacy. OBJECTIVES: This study was conducted to compare the efficacy and safety of rupatadine and levocetirizine, respectively, in CIU patients. METHODS: A prospective, open, comparative, randomized study was conducted in 100 patients, of whom 50 were treated with levocetirizine and 50 were treated with rupatadine. Efficacy parameters used were urticarial activity score (UAS) and Dermatology Life Quality Index (DLQI) values. Safety was evaluated by monitoring for adverse drug reactions and by using the critical flicker fusion threshold (CFFT) test and a visual analog scale (VAS) at baseline, and at 2, 4, and 6 weeks. RESULTS: The mean UAS decreased to 0.10 in the levocetirizine group and to 0.38 in the rupatadine group. Patients in the levocetirizine group showed a more significant (P < 0.001) improvement, although symptoms improved in both groups. Significant reductions in mean DLQI scores were observed in both groups, but the decrease was statistically significant in the levocetirizine group (P < 0.05). Somnolence was the most common side effect in both groups. Patients in the levocetirizine group showed more psychomotor impairment based on the CFFT test. Findings on the VAS showed sedative effects in both groups (P < 0.05). CONCLUSIONS: Levocetirizine was found to be more efficacious than rupatadine in CIU patients, but both drugs caused mild sedation.
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