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NasalCrom Side Effects

Generic name: cromolyn nasal

Medically reviewed by Drugs.com. Last updated on Apr 16, 2022.

Note: This document contains side effect information about cromolyn nasal. Some of the dosage forms listed on this page may not apply to the brand name NasalCrom.

For the Consumer

Applies to cromolyn nasal: nasal spray

Side effects requiring immediate medical attention

Along with its needed effects, cromolyn nasal (the active ingredient contained in NasalCrom) 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

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

Side effects not requiring immediate medical attention

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

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

Less common

  • Cough
  • headache
  • postnasal drip
  • unpleasant taste

For Healthcare Professionals

Applies to cromolyn nasal: nasal spray

General

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

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

Frequency not reported: Anaphylaxis[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]

References

1. MHRA. Medicines and Health Regulatory Agency "MHRA Drug Safety Update. http://www.mhra.gov.uk/Safetyinformation/DrugSafetyUpdate." (2013):

2. "Product Information. Cromolyn Sodium Nasal (cromolyn nasal)." Bausch and Lomb (2022):

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Some side effects may not be reported. You may report them to the FDA.

Medical Disclaimer