Decongestant
from Jay L. Hoecker, M.D.
Vicks VapoRub doesn't relieve nasal congestion. But the strong menthol
odor of VapoRub tricks your brain. As a result, you feel like you're
breathing through an unclogged nose. By contrast, decongestant tablets
and nasal sprays sold over-the-counter appear to narrow blood vessels in
the lining of your nose, leading to reduced swelling in your nasal
passages.
VapoRub has drawbacks other than its ineffectiveness as a nasal
decongestant. It's unsafe for any use in children under 2 years of age.
Swallowing a few teaspoons of camphor — one of the main ingredients in
VapoRub and other topical medications, such as Campho-Phenique and
Bengay — can cause fatal poisoning in toddlers. Topical camphor absorbed
through mucous membranes or broken skin also can be toxic. That's why
you should never put VapoRub in or around the nostrils — particularly a
small child's nostrils. Finally, if VapoRub gets in your eye, it can
injure your cornea.
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