What is cromolyn? What are the uses for cromolyn?

Cromolyn sodium is used for the management of mastocytosis and to improve the symptoms associated with it, including:

What brand names are available for cromolyn?

Nasalcrom, Gastrocrom

Is cromolyn available as a generic drug?


Do I need a prescription for cromolyn?

No (nasal solution). Yes (other forms)

What are the side effects of cromolyn?

Common side effects include:

Allergic reactions also can occur. Increased spasm of the breathing tubes (bronchospasm), throat irritation, and cough are the most common side effects from oral inhalation of cromolyn. Taking a beta-adrenergic bronchodilator (for example, albuterol) prior to the cromolyn can prevent these side effects. Cromolyn intranasal spray can produce sneezing and nasal irritation, but these effects generally are short-lived following each application. Use of cromolyn eye drops can produce irritation of the eye. This effect also is generally short-lived.

What is the dosage for cromolyn?

Cromolyn nebulized solution: 20 mg inhaled via nebulizer 2 or 4 times daily. Intranasal spray: Adults and children 2 years of age and older can use one spray in each nostril three or four times daily. If necessary, the dose may be increased to 6 times daily.

Ophthalmic (eye) solution: The usual dose in adults and children 4 years of age and older is one or two drops in each eye 4 to 6 times per day. Relief may be evident within a few days but several weeks of therapy may be required.

Oral concentrate solution: The recommended dose is 200 mg 4 times daily 30 minutes prior to meals.

Which drugs or supplements interact with cromolyn?

No drug interactions have been described with cromolyn.


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Is cromolyn safe to take if I'm pregnant or breastfeeding?

There are no adequate studies in pregnant women.

What else should I know about cromolyn?

What preparations of cromolyn are available?

Intranasal Spray: 5.2 mg/spray; Nebulized Solution: 10 mg/ml: Opthalmic Solution: 4% (1.6 mg/drop); Oral Concentrate: 100 mg/5 ml.

How should I keep cromolyn stored?

Cromolyn should be kept at room temperature, 20 C - 25 C (68 F - 77 F).


Cromolyn (Nasalcrom, Gastrocrom [Intal, Opticrom are discontinued]) is used for the treatment of symptoms associated with mastocytosis including diarrhea, flushing, headaches, vomiting, urticaria (hives), abdominal pain, nausea, itching, runny and stuffy nose, sneezing, hay fever, and allergic rhinitis. Review side effects, drug interactions, warnings and precautions, and pregnancy information prior to taking this drug.

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Asthma is a chronic respiratory disease. See Answer

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