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Topical enviroxime against rhinovirus infection

Enviroxime, an inhibitor of rhinovirus replication, was studied in a double-blind, placebo-controlled trial with 99 volunteers. The efficacy of a nasal-spray formulation of enviroxime was tested as pretreatment or as postchallenge treatment for rhinovirus type 4 infection. In the regimens used, drug administration neither prevented infection nor reduced the frequency of specific colds. The mean concentration of enviroxime in nasal washes (12 h after a dose) differentiated two groups of responders. Those in whom the drug concentration exceeded 100 ng/ml had some benefits, although these were statistically insignificant.