Inhaled corticosteroids prevent your airways from becoming inflamed in order to help keep your asthma symptoms away.

Inhaled steroids are used with a metered-dose inhaler (MDI) and spacer. Or, they may be used with a dry powder inhaler.

You should use an inhaled steroid every day as directed, even if you do not have symptoms.

After you use it, rinse your mouth with water, gargle, and spit it out.

If your child cannot use an inhaler, your provider may give you a medicine to use with a nebulizer. This machine turns liquid medicine into a spray so your child can breathe the medicine in.

These medicines relax the muscles of your airways to help keep your asthma symptoms away.

Normally, you use these medicines only when you are using an inhaled steroid medicine and you still have symptoms. Do not take these long-acting medicines alone.

Use this medicine every day as directed, even if you do not have symptoms.

Your provider may ask you to take both a steroid medicine and a long-acting beta-agonist medicine.

It may be easier to use an inhaler that has both medicines in them.

Another class of medicines called antimuscarinic agents may help some people with asthma. Check with your provider to see if this might help you.

These medicines are used to prevent asthma symptoms. They come in tablet or pill form and can be used together with a steroid inhaler.

Cromolyn is a medicine that may prevent asthma symptoms. It can be used either in an inhaler or a nebulizer, so it may be easy for young children to take.

Asthma - inhaled corticosteroids; Asthma - long-acting beta-agonists; Asthma - leukotriene modifiers; Asthma - cromolyn; Bronchial asthma - control drugs; Wheezing - control drugs; Reactive airway disease - control drugs

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National Heart, Lung and Blood Institute. Asthma Management Guidelines: Focused Updates 2020. www.nhlbi.nih.gov/health-topics/asthma-management-guidelines-2020-updates. Updated February 4, 2021. Accessed February 8, 2024.

O'Byrne PM, Satia I. Inhaled ß₂ - agonists. In: Burks AW, Holgate ST, O'Hehir RE, et al, eds. Middleton's Allergy: Principles and Practice. 9th ed. Philadelphia, PA: Elsevier; 2020:chap 93.

Pollart SM, DeGeorge KC, Kolb A. Asthma in children. In: Kellerman RD, Rakel DP, Heidelbaugh JJ, Lee EM, eds. Conn's Current Therapy 2024. Philadelphia, PA: Elsevier; 2024:1317-1324.

Vishwanathan RK, Busse WW. Management of asthma in adolescents and adults. In: Burks AW, Holgate ST, O'Hehir RE, et al, eds. Middleton's Allergy: Principles and Practice. 9th ed. Philadelphia, PA: Elsevier; 2020:chap 52.

Updated by: Frank D. Brodkey, MD, FCCM, Associate Professor, Section of Pulmonary and Critical Care Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.