can you? yes. should you? probably not but that would be up to your child's pediatrician. there have been some studies that have shown a worsening of symptoms when vicks is used. it is not very effective in controlling any of these cold symptoms so you really don't need to subject your baby to this either rubbed on there chests (some grandmas even feel that putting on the feet will help! ) or in a hot vaporizer. i know that many of us were raised by a parent that used vicks and we survived but that does not mean it is 100% safe in infants. in my pediatric practice i discourage the use of vicks on a baby this young and ignore the dirty looks that i get from the grandmas when i inform them. for adults and older kids they can use it if they want.
can you use vicks vapor rub on a 4 month old