Vapor rub appears to decrease nighttime cough in children with upper respiratory infections
Paul IM, Beiler JS, King TS, Clapp ER, Vallati J, Berlin CM, Jr. Vapor rub, petrolatum, and no treatment for children with nocturnal cough and cold symptoms. Pediatrics 2010;126:1092-9.
PII: S0022-3476(11)00267-8
doi:10.1016/j.jpeds.2011.03.012
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