You can use the medicated Vicks VapoInhaler every two hours, with two inhalations in each nostril per use. That’s the maximum frequency listed on the product label, and you should not exceed it. There’s also a hard limit on duration: no more than seven consecutive days of use.
Recommended Frequency and Dosage
The medicated Vicks VapoInhaler contains a decongestant called levmetamfetamine, which shrinks swollen blood vessels inside your nose to open up your airways. The label directions are straightforward:
- Adults and children 12 and older: 2 inhalations in each nostril, no more often than every 2 hours
- Children 6 to 11: 1 inhalation in each nostril (with adult supervision), same 2-hour minimum between uses
- Children under 6: Ask a doctor before use
- Children under 2: Do not use
If you’re awake for 16 hours, that works out to roughly 8 uses in a day at maximum. Most people won’t need it that frequently. The decongestant effect typically lasts a few hours, so using it every 2 to 3 hours during a bad cold is reasonable without pushing the limits.
The 7-Day Rule
Even if you’re spacing your inhalations correctly, you should stop using the medicated inhaler after seven days. This isn’t an arbitrary guideline. Nasal decongestants of all types, including sprays and inhalers, can cause a condition called rebound congestion when used too long. After about three days of continuous use, your nasal passages start to depend on the medication. When the drug wears off, your congestion comes back worse than before, which tempts you to use the inhaler again, creating a cycle.
With rebound congestion, stopping the inhaler can cause intense stuffiness, headaches, and even a feeling of suffocation. The condition is treatable, but it’s much easier to avoid by sticking to the seven-day limit. If your congestion hasn’t improved after a week, something other than a common cold may be going on.
What Happens If You Overuse It
Because levmetamfetamine acts on your blood vessels, using the inhaler more often than directed can produce side effects beyond your nose. Excessive use may cause elevated blood pressure, rapid heart rate, nausea, stomach cramps, dizziness, headache, sweating, muscle tension, and tremors. Some people also experience anxiety, insomnia, or loss of appetite. These effects are uncommon at normal doses but become more likely when you exceed the recommended frequency.
People with high blood pressure, heart disease, thyroid disorders, diabetes, or prostate enlargement should be especially cautious. The active ingredient is a mild stimulant, and even topical exposure through the nose can have systemic effects in sensitive individuals.
Medicated vs. Non-Medicated Versions
Vicks sells two versions of the VapoInhaler, and the usage rules are completely different. The medicated version contains levmetamfetamine and carries the every-two-hours, seven-day-maximum restrictions described above. The non-medicated version contains only menthol and other aromatic vapors with no active drug. It creates a cooling sensation that makes breathing feel easier without actually shrinking swollen tissue.
Because the non-medicated inhaler has no decongestant, you can use it as often as you’d like with no rebound congestion risk and no time limit. It’s designed for adults and children 12 and older. If you just want that refreshing, nose-clearing sensation and your congestion is mild, this version lets you inhale freely throughout the day. For significant nasal blockage, though, only the medicated version will physically reduce swelling.
Making the Most of Each Use
To get the best results from each inhalation, gently blow your nose first to clear any mucus. Hold one nostril closed and insert the inhaler tip just inside the other nostril, then inhale slowly and steadily. Repeat on the other side. Two slow, deliberate inhalations deliver the medication more effectively than quick, shallow sniffs. Replace the cap between uses to preserve the active ingredient, which gradually loses potency with air exposure. Most inhalers remain effective for about three months after first opening.