Control medicines for asthma are medicines you take regularly to control your asthma symptoms. You must use these medicines every day for them to work as well as possible. You and your health care provider can make a plan for the medicines that work for you. This plan will include when you should take them and how much you should take.
You may need to take these medicines for at least a month before you start to feel the full effects.
Take the medicines even when you feel OK. Take enough with you when you travel. Plan ahead. Make sure you do not run out.
Inhaled Corticosteroids
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.
Long-acting Beta-agonist Inhalers
These medicines relax the muscles of your airways to help keep your asthma symptoms away.
Normally, you use these medicines only when you are already 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.
Combination Therapy
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.
Leukotriene Modifiers
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
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.
Alternative Names
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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References
Drazen JM, Bel EH. Asthma. In: Goldman L, Cooney KA, eds. Goldman-Cecil Medicine. 27th ed. Philadelphia, PA: Elsevier; 2024:chap 75.
Liu AH, Bacharier LB, Fitzpatrick AM, Sicherer SH. Childhood asthma. In: Kliegman RM, St. Geme JW, Blum NJ, et al, eds. Nelson Textbook of Pediatrics. 22nd ed. Philadelphia, PA: Elsevier; 2025:chap 185.
Lugogo N, Que LG, Carr TF, Kraft M. Asthma: diagnosis and management. In: Broaddus VC, Ernst JD, King TE, et al, eds. Murray and Nadel's Textbook of Respiratory Medicine. 7th ed. Philadelphia, PA: Elsevier; 2022:chap 62.
National Heart, Lung and Blood Institute website. Asthma management guidelines: focused updates 2020. www.nhlbi.nih.gov/health-topics/asthma-management-guidelines-2020-updates. Updated February 4, 2021. Accessed March 9, 2026.
O'Byrne PM, Satia I. Inhaled ß 2 - 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.
Viswanathan 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.
Patient Instructions
- Asthma and school
- Asthma - child - discharge
- Asthma in adults - what to ask the doctor
- Asthma in children - what to ask your doctor
- Asthma - quick-relief drugs
- Bronchiolitis - discharge
- Exercise-induced asthma
- Exercising and asthma at school
- How to use a nebulizer
- How to use an inhaler - no spacer
- How to use an inhaler - with spacer
- How to use your peak flow meter
- Make peak flow a habit
- Signs of an asthma attack
- Stay away from asthma triggers
Review Date 2/27/2026
Updated by: Jacob Berman, MD, MPH, Associate Professor of Medicine, Division of General Internal Medicine, University of Washington School of Medicine, Seattle, WA. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.
