If you use a steroid inhaler to control asthma or chronic obstructive pulmonary disease (COPD), you've probably been told to rinse your mouth afterward.
This simple step takes less than a minute, but it can significantly reduce the risk of one of the most common side effects of inhaled corticosteroids: oral thrush. Many people skip rinsing because they don't understand why it matters. Fortunately, it's an easy habit that helps keep your mouth healthy while allowing you to continue getting the full benefits of your medication.
Why Do You Need to Rinse?
Steroid inhalers deliver medication directly into your lungs, but a small amount of medicine naturally remains in your mouth, tongue, gums, and throat. Over time, this leftover medication can reduce the body's normal ability to control yeast that naturally lives in the mouth. This may allow an overgrowth of Candida, leading to oral thrush, a common fungal infection. Rinsing removes much of the medication before it can cause problems.
What Is Oral Thrush?
Oral thrush is a yeast infection inside the mouth caused by an overgrowth of Candida fungi. Symptoms may include white patches on the tongue or inside the cheeks, redness, soreness, a burning sensation, pain when eating, and changes in taste. Although oral thrush is usually not serious, it often requires prescription antifungal treatment. Preventing it is much easier than treating it.
Which Inhalers Require Rinsing?
You should rinse your mouth after using most inhaled corticosteroids (ICS), including inhalers containing budesonide, fluticasone, beclomethasone, mometasone, and ciclesonide. You should also rinse after using combination inhalers that contain an inhaled corticosteroid along with a long-acting bronchodilator (LABA). If you're unsure whether your inhaler contains a corticosteroid, ask your healthcare provider or pharmacist.
Do You Need to Rinse After Albuterol?
Generally, no. Albuterol is a rescue inhaler, not a corticosteroid. Although rinsing isn't harmful, it usually isn't necessary after using albuterol alone.
How to Rinse Your Mouth Correctly
- Take your prescribed dose.
- Take a sip of clean water.
- Swish the water around your mouth for several seconds, making sure it reaches your cheeks, tongue, and gums.
- Tilt your head back briefly and gargle if you're comfortable doing so. This helps remove medication from the back of the throat.
- Spit out the water. Do not swallow it. Swallowing small amounts isn't usually dangerous, but spitting removes the medication instead of allowing it to pass through your digestive system.
Does Brushing Your Teeth Work Instead?
Brushing your teeth is excellent for oral health, but it should not replace rinsing immediately after using your inhaler. If you normally brush your teeth soon after taking your controller inhaler, it's still a good idea to rinse your mouth first.
Does Using a Spacer Help?
Yes. If you use a metered-dose inhaler (MDI), a spacer can reduce the amount of medication that lands in your mouth and throat. This means more medication reaches your lungs, less medication remains in your mouth, and the risk of oral thrush may be lower. Even when using a spacer, rinsing your mouth afterward is still recommended for inhaled corticosteroids.
Other Ways to Reduce Side Effects
You can lower your risk of mouth and throat irritation by using proper inhaler technique, using a spacer if recommended, cleaning your inhaler regularly, taking your medication exactly as prescribed, and attending regular follow-up appointments. Small improvements in technique can make your medication more effective while reducing side effects.
What If You Forget to Rinse?
Missing a rinse once in a while usually isn't a cause for concern. However, repeatedly skipping this step may increase your risk of developing oral thrush, hoarseness, a sore throat, and voice changes. If you realize you forgot to rinse, simply do it as soon as you remember.
Frequently Asked Questions
Can I swallow the rinse water?
It's better to spit it out. Spitting removes medication from your mouth instead of swallowing it.
Can I use mouthwash instead of water?
Water works well for most people. Mouthwash is generally not necessary, although some people prefer to use it after rinsing with water.
Should children rinse too?
Yes. Children who are old enough to rinse and spit should do so after using a steroid inhaler. Younger children may benefit from taking a few drinks of water after treatment if they cannot rinse effectively.
Do dry powder inhalers require rinsing?
If the dry powder inhaler contains an inhaled corticosteroid, yes. The recommendation depends on the medication—not the inhaler type.
Does rinsing reduce how well the medication works?
No. By the time you rinse, the medication intended for your lungs has already been inhaled. Rinsing removes medication left behind in your mouth and throat without reducing the intended effect in your lungs.
When Should You Contact Your Healthcare Provider?
Schedule an appointment if you notice white patches inside your mouth, your mouth becomes painful or sore, you develop persistent hoarseness, you have trouble using your inhaler correctly, or your asthma symptoms are worsening despite treatment. Your healthcare provider can evaluate whether your inhaler technique or medication needs adjustment.
Seek Immediate Medical Care If
Seek emergency medical care immediately if you develop severe shortness of breath that does not improve with your rescue inhaler, you cannot speak in full sentences because of breathing difficulty, your lips or fingernails become blue or gray, or you experience rapidly worsening asthma symptoms. These symptoms are signs of a medical emergency and require immediate evaluation.
The Bottom Line
If you use a steroid inhaler, rinsing your mouth after every dose is one of the simplest ways to reduce side effects. This quick habit helps remove medication left in your mouth and throat, lowering the risk of oral thrush, hoarseness, and irritation.
Using proper inhaler technique, considering a spacer when appropriate, and taking your controller medication consistently can help you get the most benefit from treatment while minimizing unwanted side effects.