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A relevant, unique research paper I found with particular relevance for COVID-19: Hypothesis: Nasal vs. oral inhalation accounts for the severity of COVID-19. People who lose their sense of smell apparently generally experience milder cases than those who do not. This paper theorizes that when a higher percentage of coronavirus particles enter through the ...


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I agree with Mark, administration route probably doesn't matter because none of these were shown to work. ColdZyme has an open-label trial but which found no reduction in incidence, and only a very modest reduction in symptom duration. They do mention and even have more recent in vitro trials, but those results insofar don't hold in vivo for reasons that ...


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I can't find any evidence that the oral sprays you list work. The ColdZyme website, for example, lists exactly zero studies, and specifically disclaims being a medicine. Taffix claims that a number of studies have been done, but the only in vivo study was very low quality, being an unblinded study. In short, these give strong evidence of being "snake ...


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This answer is about medical terminology as widely agreed and commonly used by medical professionals. Rhinitis is a broad name of a disease or condition with inflammation of the mucosal lining in the nasal cavity (Cleveland Clinic, Malacards). Inflammation can be infectious, irritant, allergic, drug-induced, etc. (a more detailed list on American Family ...


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