Cromolyn Nasal Side Effects

Medically reviewed by Drugs.com. Last updated on Jan 12, 2025.

Applies to cromolyn nasal: nasal spray.

Common side effects of cromolyn nasal

Some side effects of cromolyn nasal may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects.

Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

More common side effects

• burning, stinging, or irritation inside of nose
• flushing
• increase in sneezing

Less common side effects

• cough
• headache
• postnasal drip
• unpleasant taste

Serious side effects of cromolyn nasal

Along with its needed effects, cromolyn nasal may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor as soon as possible if any of the following side effects occur while taking cromolyn nasal:

Rare side effects

• allergic reaction (coughing
• difficulty in swallowing
• hives or itching
• swelling of face, lips, or eyelids
• wheezing or difficulty in breathing)
• nosebleeds
• skin rash

For healthcare professionals

Applies to cromolyn nasal: nasal spray.

General adverse events

The most commonly reported adverse effects have included headache, bad taste in mouth, and a brief stinging or sneezing after use.^[Ref]

Respiratory

• Common (1% to 10%): Sneezing, nasal stinging, burning, irritation
• Rare (less than 1%): Epistaxis, postnasal drip^[Ref]

Hypersensitivity

• Frequency not reported: Anaphylaxis^[Ref]

Hypersensitivity has been reported to develop after weeks to years of use.^[Ref]

Nervous system

• Common (1% to 10%): Headache^[Ref]

Gastrointestinal

• Common (1% to 10%): Bad taste^[Ref]

Dermatologic

• Rare (less than 0.1%): Rash^[Ref]

Further information

Cromolyn nasal side effects can vary depending on the individual. Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Note: Medication side effects may be underreported. If you are experiencing side effects that are not listed, submit a report to the FDA by following this guide.

Medical Disclaimer