This medication is used to prevent symptoms (wheezing and shortness of breath) caused by asthma. It is generally used with other medications by patients who have symptoms at least twice weekly (mild persistent asthma). It is also used to prevent wheezing and shortness of breath caused by exercise, cold/dry/polluted air, or allergens such as pollen. Controlling breathing problems may decrease time lost from work or school. If you use this medication you may not need to use other asthma drugs (such as corticosteroids) as often. Cromolyn belongs to a class of medications called mast cell stabilizers. It works by preventing release of certain natural chemicals (such as histamines) that may cause swelling of the airways and breathing problems. This medication must be used regularly to prevent asthma symptoms. It does not work right away and should not be used to relieve sudden asthma attacks. If an asthma attack occurs, use your quick-relief inhaler as prescribed.
Coughing, stuffy nose, sneezing, headache, nausea, or tearing may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly. Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects. Tell your doctor right away if any of these unlikely but serious side effects occur: dizziness, painful/frequent urination, joint swelling/pain, swollen glands around the cheek (parotid gland), muscle weakness, heartburn. Rarely, this medication may cause severe sudden worsening of breathing problems/asthma immediately after use. If you have sudden worsening of breathing, use your quick-relief inhaler and seek immediate medical attention. A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing. This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist. In the US - Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at www.fda.gov/medwatch.
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