Effectiveness of antihistamines in COVID-19 symptoms: a systematic review studyEffectiveness of Antihistamines in COVID-19 Symptoms: A Systematic Review
Abstract
Background and Objectives This study was aimed to determine the effect of antihistamines on Covid-19 disease. Subjects and Methods Two researchers searched online electronic databases PubMed, MEDLINE and Google Scholar from the beginning of the pandemic until December 30, 2022 using Mesh and keywords such as: "SARS-CoV-2" or "COVID-19" and "Antihistamine". Results The results depicted that levocetirizine, diphenhydramine, hydroxyzine, azelastine, dexchlorpheniramine, cetirizine, loratadine, desloratadine, fexofenadine, triprolidine, dimetindene, and famotidine are effective in treating and reducing the symptoms of Covid-19. Among them, famotidine had contradictory results, and although it may be a useful supplement in the treatment of covid-19, laboratory studies have failed to show the direct role of famotidine in controlling this disease. Conclusion From the above-discussed findings regarding antihistamines and Covid-19, specific antihistamines should be identified and included as an essential therapeutic approach for the management of Covid-19 alongside other approaches. In fact, antihistamines appear to be promising in the management of Covid-19 with a short time to relieve symptoms while giving the body enough time to reset its defense mechanism, thus reaching a rapid recovery. They work by both modulating histamine pathways and suppressing virus growth. Despite the fact that more trials and clinical studies still need to be done on the identification and deployment of…
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