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cromolyn sodium (nasal)

Pronunciation: KRO mo lin SO dee um

Brand: Nasalcrom

What is the most important information I should know about cromolyn sodium nasal?

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You should not use this medication if you are allergic to cromolyn sodium.

Before you use cromolyn sodium nasal, tell your doctor if you have asthma, drug allergies, or polyps in your nose.

Cromolyn sodium nasal will not treat allergy symptoms that have already begun. The medication works best if used at least 1 week before you come into contact with things you are allergic to (pollen, dust, pets, etc).

Stop using this medication and call your doctor if you have severe burning, stinging, or irritation in your nose, nosebleeds, sinus pain, sores in your nose, wheezing, chest tightness, fever, or green/yellow mucus from your nose.

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Do not use cromolyn sodium nasal more than 6 times in a 24-hour period. Do not use this medication for longer than 12 weeks unless your doctor has told you to.

What is cromolyn sodium nasal?

Cromolyn sodium is an anti-inflammatory medication. It works by preventing the release of substances in the body that cause inflammation.

Cromolyn sodium nasal is used to prevent allergy symptoms such as runny nose, stuffy nose, sneezing, itching, and post-nasal drip.

Cromolyn sodium nasal will not treat allergy symptoms that have already begun. The medication works best if used at least 1 week before you come into contact with things you are allergic to (pollen, dust, pets, etc).

Cromolyn sodium nasal will not treat the symptoms of asthma, sinus infections, or the common cold.

Cromolyn sodium nasal may also be used for purposes not listed in this medication guide.

What should I discuss with my healthcare provider before using cromolyn sodium nasal?

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You should not use this medication if you are allergic to cromolyn sodium.

To make sure you can safely use cromolyn sodium nasal, tell your doctor if you have any of these other conditions:

  • asthma;
  • drug allergies; or
  • polyps in your nose.

FDA pregnancy category B. This medication is not expected to be harmful to an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant during treatment.

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It is not known whether cromolyn sodium passes into breast milk or if it could harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby.

How should I use cromolyn sodium nasal?

Use exactly as prescribed by your doctor. Do not use in larger or smaller amounts or for longer than recommended. Follow the directions on your prescription label.

This medicine is usually given as 1 spray into each nostril every 4 to 6 hours during allergy season or within 1 week before you will be exposed to an allergen. Follow your doctor's instructions.

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Do not use cromolyn sodium nasal more than 6 times in a 24-hour period. Do not use this medication for longer than 12 weeks unless your doctor has told you to.

To use the nasal spray:

  • Blow your nose gently before each use.
  • Keeping your head upright, insert just the tip of the spray bottle into your nostril. Hold your other nostril closed with one finger. Spray the medicine into the nostril while inhaling, then sniff deeply a few times to make sure the medicine gets up into your nasal passages.
  • Repeat these steps in your other nostril.
  • After using the nasal spray, rinse the tip with hot water or wipe it with a clean tissue and recap. Avoid getting water into the nasal spray tip.

It may take up to 2 weeks before your symptoms improve. Keep using the medication as directed and tell your doctor if your symptoms do not improve after 2 weeks of treatment.

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Store at room temperature away from moisture, heat, and light. Keep the bottle capped when not in use.

What happens if I miss a dose?

Use the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not use extra medicine to make up the missed dose.

What happens if I overdose?

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Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

What should I avoid while using cromolyn sodium nasal?

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Avoid getting this medication in your eyes. If this does happen, rinse with water.

What are the possible side effects of cromolyn sodium nasal?

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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.

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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.
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Less serious side effects may include mild burning or stinging inside your nose after use.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

What other drugs will affect cromolyn sodium nasal?

There may be other drugs that can interact with cromolyn sodium nasal. Tell your doctor about all medications you use. This includes prescription, over-the-counter, vitamin, and herbal products. Do not start a new medication without telling your doctor.

Where can I get more information?

Your pharmacist can provide more information about cromolyn sodium nasal.


Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

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