Vicks VapoRub is safe for most adults and children over age 2 when applied to the chest, throat, or back as directed. The product contains camphor (4.8%), menthol (2.6%), and eucalyptus oil (1.2%) in a petroleum jelly base. Problems arise when it’s used on the wrong body part, on the wrong age group, or in excessive amounts.
Why It’s Not Safe for Children Under 2
The FDA requires that camphor-containing topical products carry a warning against use on children under 2. Vicks VapoRub follows this guideline on its label. The concern isn’t theoretical. A case report published in the journal Chest described a toddler who developed severe respiratory distress after VapoRub was applied directly under her nose.
The underlying problem is physiological. In lab studies using inflamed airways, VapoRub exposure increased mucus production by 63% while simultaneously slowing the tiny hair-like structures that sweep mucus out of the airways by 35%. In an adult, this combination might cause mild congestion. In a young child with already-narrow airways, it can lead to dangerous mucus buildup and breathing difficulty.
For babies between 3 months and 2 years, Vicks makes a separate product called Vicks BabyRub. It contains fragrances and aloe in a petroleum jelly base but does not contain camphor, menthol, or eucalyptus oil, which are the ingredients that can irritate small airways.
Never Apply It Inside Your Nose
One of the most common misuses is rubbing VapoRub inside the nostrils to clear congestion. This can cause a rare but serious condition called exogenous lipoid pneumonia. The petroleum base of the ointment, when applied inside the nose over weeks or months, can be inhaled into the lungs. Once there, the oily substance triggers a foreign-body inflammatory reaction in lung tissue. Symptoms include persistent cough, chest pain, fever, and chills.
The risk increases with long-term, repeated use. The mentholated ointment itself suppresses the cough reflex and slows mucus clearance, which makes it easier for small amounts of petroleum to travel deeper into the airways without triggering the body’s usual defenses. The product label specifically states it should not be applied inside the nose, eyes, or ears.
Skin Reactions
VapoRub contains several plant-derived ingredients, including turpentine oil, cedar leaf oil, nutmeg oil, and thymol, in addition to its three active ingredients. Any of these can potentially irritate or sensitize the skin. Allergic contact dermatitis from VapoRub is uncommon but documented. If you notice redness, itching, or a rash where you applied it, stop using it and wash the area.
Applying VapoRub to broken or damaged skin increases the chance of irritation and allows more camphor to be absorbed into the bloodstream. Stick to intact skin on the chest, throat, or back.
What Happens If It’s Swallowed
Camphor is toxic when ingested, and VapoRub’s 4.8% camphor concentration makes accidental ingestion a real concern, especially with children. Symptoms of camphor poisoning include nausea, vomiting, abdominal pain, seizures, muscle spasms, and in severe cases, unconsciousness and slowed breathing. Even a small amount swallowed by a young child can be dangerous because the dose relative to body weight is much higher than it would be for an adult.
Store VapoRub out of reach of children. The jar looks and smells like something a curious toddler might taste. If someone swallows VapoRub, contact Poison Control (1-800-222-1222 in the U.S.) immediately.
Don’t Heat It
Some people microwave VapoRub or add it to boiling water to create a stronger vapor. This is dangerous. The petroleum base can splatter and cause burns, and heating concentrates the camphor vapors beyond what’s intended for safe inhalation. If you want to inhale Vicks vapors, the company sells a separate steam inhalation product designed for that purpose. The ointment itself should only be applied topically or placed in a compatible Vicks vaporizer.
Keep It Away From Pets
Camphor is toxic to dogs and cats, and it absorbs readily through their skin. Pets who lick, ingest, or have VapoRub applied to them can develop vomiting, diarrhea, depression, and seizures. In severe cases, respiratory depression from camphor poisoning can be fatal. If your pet gets into VapoRub, contact your veterinarian or the Pet Poison Helpline.
Safe Use at a Glance
- Age: Adults and children 2 and older only. Use BabyRub for infants 3 months to 2 years.
- Where to apply: Chest, throat, or back. Never inside the nose, mouth, eyes, or ears.
- How often: No more than 3 to 4 times daily.
- Skin condition: Intact skin only. Avoid wounds, rashes, or irritated areas.
- Storage: Out of reach of children and pets.