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(cromolyn sodium) Nasal Spray


Chemically, cromolyn sodium is the disodium salt of 1,3-bis (2-carboxychromon-5-yloxy)-2-hydroxypropane. The empirical formula is C23H14Na2O11; the molecular weight is 512.34.


Active ingredient (per spray) Purpose
Cromolyn sodium 5.2 mg Nasal allergy symptom controller

Inactive ingredients
benzalkonium chloride, edetate disodium, purified water

What are the possible side effects of cromolyn sodium nasal (Nasalcrom, Nasalcrom Child)?

Get emergency medical help if you have any of these signs of an allergic reaction: hives or itching; difficulty breathing; severe dizziness; swelling of your face, lips, tongue, or throat.

Stop using this medication and call your doctor if you have any of these serious side effects:

  • severe burning, stinging, or irritation in your nose;
  • nosebleeds, sinus pain, or sores in your nose;
  • wheezing, tight feeling in your chest; or
  • fever, green or yellow mucus from the nose.

Less serious side effects may include...

Read All Potential Side Effects and See Pictures of Nasalcrom »

What are the precautions when taking cromolyn sodium (Nasalcrom)?

Before using this medication, tell your doctor or pharmacist if you are allergic to cromolyn; or if you have any other allergies. This product may contain inactive ingredients (such as preservatives like benzalkonium chloride), which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

If you have any of the following health problems, consult your doctor or pharmacist before using this product: asthma, growths in the nose (nasal polyps).

If you are using this medication for self-treatment, tell your doctor before using this medication if you have any of the following symptoms: fever, yellow/green/discolored fluid from the nose, sinus pain, wheezing.

During pregnancy, this medication should be used only when clearly needed....

Read All Potential Precautions of Nasalcrom »

Last reviewed on RxList: 4/28/2008
This monograph has been modified to include the generic and brand name in many instances.

Nasalcrom - User Reviews

Nasalcrom User Reviews

Now you can gain knowledge and insight about a drug treatment with Patient Discussions.

Here is a collection of user reviews for the medication Nasalcrom sorted by most helpful. Patient Discussions FAQs

Report Problems to the Food and Drug Administration


You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

Allergies & Asthma

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