A nebulizer turns liquid medication into a fine mist you breathe into your lungs, and the liquids you put in it fall into a few categories: bronchodilators that open your airways, corticosteroids that reduce inflammation, saline solutions that loosen mucus, and in some cases antibiotics or mucus-thinning drugs. Only medications specifically formulated for nebulization should go in the cup. Never add essential oils, cough syrups, or plain tap water.
Bronchodilators: The Most Common Nebulizer Medication
If you or your child has asthma, COPD, or another condition that tightens the airways, a bronchodilator is likely what your doctor prescribed. These medications relax the muscles around your airways so air can move through more easily. Albuterol is by far the most widely used. It comes in pre-measured vials of liquid (typically 0.63 mg or 1.25 mg in 3 mL of solution), and a single treatment runs through the nebulizer in about 5 to 15 minutes.
Levalbuterol is a closely related option that works the same way but may cause fewer side effects like jitteriness in some people. There’s also ipratropium bromide, which opens the airways through a different mechanism. It’s sometimes prescribed on its own or combined with albuterol in a single pre-mixed vial so you only need one treatment session instead of two.
Corticosteroids for Long-Term Control
While bronchodilators provide quick relief, nebulized corticosteroids work over time to keep airway inflammation in check. Budesonide is the main one prescribed as a nebulizer solution, and it’s approved for children as young as 12 months up through age 8. The usual dose ranges from 0.5 mg to 1 mg, given once daily or split into two doses.
This isn’t a rescue medication. You won’t feel immediate relief the way you do with albuterol. Instead, using it consistently reduces swelling in the airways so flare-ups happen less often. Many children with persistent asthma use nebulized budesonide as their daily controller medication because they’re too young to use a traditional inhaler effectively.
Saline Solutions
Sterile saline is the simplest thing you can nebulize. Normal saline (0.9% salt concentration) moistens the airways and helps loosen mucus, making it easier to cough up. It’s sometimes used on its own for congestion or as a base to dilute other medications in the nebulizer cup.
Hypertonic saline has a higher salt concentration, commonly 3% or 7%, and pulls water into the airways more aggressively. This makes thick, sticky mucus thinner and easier to clear. It’s a standard part of airway clearance therapy for people with cystic fibrosis and is also used to collect sputum samples for diagnostic testing. Hypertonic saline can irritate sensitive airways, so it’s typically used under medical guidance, often after a bronchodilator to prevent the airways from tightening in response.
Antibiotics and Mucus-Thinning Drugs
For people with cystic fibrosis or bronchiectasis, nebulized antibiotics deliver high concentrations of medication directly to infected lungs while minimizing side effects in the rest of the body. Tobramycin is the most established option, used on a rotating schedule to fight chronic bacterial lung infections. Aztreonam and colistin are other nebulized antibiotics prescribed for similar purposes.
Dornase alfa is a mucus-thinning drug (a mucolytic) used specifically in cystic fibrosis. It breaks down DNA released by white blood cells in the lungs, which is a major component of the thick mucus that clogs CF airways. These are specialized medications managed by pulmonologists, not something you’d pick up over the counter.
What Should Never Go in a Nebulizer
Essential oils are one of the most common mistakes. They can trigger severe airway spasms, especially in people with sensitive lungs, and their thick, oily consistency clogs the nebulizer’s tiny nozzles. Chamomile preparations, cough syrups, gargle solutions, and liniments are equally unsuitable. These products were never designed to be broken into fine particles and inhaled deep into the lungs.
Plain water and distilled water should also stay out of the nebulizer. Inhaling water that isn’t isotonic (matching your body’s salt balance) can irritate the airway lining. If you need moisture, use sterile normal saline. And never substitute any medication that wasn’t specifically formulated as a nebulizer solution. A pill crushed into water or a syrup poured into the cup won’t produce the right particle size and could be dangerous.
Mixing Medications in the Same Cup
Some nebulizer medications can be combined in a single session to save time, but not all combinations are safe. Albuterol and ipratropium bromide mix well together, and a pre-combined version already exists for this reason. Budesonide can be mixed with albuterol or ipratropium bromide, but any mixture should be used within 30 minutes of combining.
Other combinations are trickier. Some medication vials contain preservatives that can inactivate certain drugs when mixed. If you’re using multiple nebulized medications, check with your pharmacist before combining them in the same cup. When in doubt, nebulize them separately. And if you mix two solutions and notice any cloudiness, color change, or particles forming, discard the mixture immediately.
Keeping the Nebulizer Clean
What you put in the nebulizer matters, but so does what’s already growing inside it. Bacteria thrive in the warm, moist environment of a nebulizer cup, and breathing contaminated mist can cause lung infections. The Cystic Fibrosis Foundation recommends cleaning and disinfecting after every single use, not just rinsing.
The process has four steps: wash all detachable parts with dish soap and water, disinfect, rinse with sterile water (not tap), and air dry completely before storing. For disinfecting, you can boil the parts for 5 minutes, microwave them submerged in water for 5 minutes, or run them through a dishwasher cycle that reaches at least 158°F for 30 minutes. An electric steam sterilizer also works. Cold disinfection methods using chemical solutions are another option, but always rinse with sterile water afterward to remove residue. If you use a mesh-type nebulizer, skip the microwave and avoid antibacterial soaps, which can damage the mesh membrane.