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Cromolyn Sodium Bottle — prescription drug image

Cromolyn Sodium

Cromolyn Sodium 26ML of 5.2MG/ACT

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What is Cromolyn Sodium?

Cromolyn Sodium is an eye drop medication used to relieve symptoms of allergic conjunctivitis and keratitis, which can cause itchy, red, and swollen eyes. It helps prevent inflammation in the eyes.

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What is Cromolyn Sodium ?

Cromolyn Sodium is an eye drop medication used to relieve symptoms of allergic conjunctivitis and keratitis, which can cause itchy, red, and swollen eyes. It helps prevent inflammation in the eyes.

Source: MedlinePlus, U.S. National Library of Medicine

  • Fast or uneven heartbeat.
  • Trouble breathing.
  • Itching, rash.
  • Muscle aches.
  • If you are pregnant or breast feeding, talk to your doctor before using this medicine.
  • Make sure your doctor knows if you have liver disease or kidney disease.
What is cromolyn sodium used for?
Cromolyn sodium is a mast cell stabilizer used to prevent allergy and asthma symptoms. Its FDA-approved uses depend on the formulation: the oral concentrate (Gastrocrom) relieves symptoms of systemic mastocytosis such as diarrhea, flushing, abdominal pain, nausea, headache, and itching; the inhalation solution helps prevent asthma attacks and exercise- or allergen-induced bronchospasm; the over-the-counter nasal spray (NasalCrom) prevents and relieves hay fever symptoms; and the eye drops treat allergic conjunctivitis. It is preventive, not a rescue medicine.
How long does cromolyn sodium take to work?
Cromolyn sodium works gradually and must be taken on a regular schedule. It may take about 2 to 4 weeks of consistent use before you notice the full benefit. It does not relieve symptoms that are already happening, so it is not a substitute for a rescue inhaler or fast-acting allergy relief.
Is cromolyn sodium available over the counter?
Yes, in one form. The nasal spray NasalCrom is available over the counter without a prescription for hay fever symptoms. Other forms, such as the oral concentrate (Gastrocrom), the inhalation solution, and the ophthalmic solution, require a prescription.
What are the side effects of cromolyn sodium?
The most common side effects vary by form. The oral concentrate can cause headache and diarrhea; the inhaled form can cause throat irritation, cough, or wheezing; and the nasal spray can cause nasal stinging or sneezing. Rare but serious hypersensitivity reactions, including anaphylaxis, angioedema, and laryngeal edema, can occur. Seek medical help right away if you have trouble breathing or swelling of the face, lips, or throat.
How do you take oral cromolyn sodium (Gastrocrom)?
The oral concentrate is usually taken 30 minutes before meals and at bedtime. Mix the liquid in a glass of water and drink all of it; do not mix it with juice, milk, or food. Take it on a regular schedule as prescribed, and follow your provider's instructions. Do not stop it abruptly if you are reducing therapy for mastocytosis.
How much does Cromolyn Sodium cost without insurance?
The price of Cromolyn Sodium without insurance varies by pharmacy, dosage, and quantity. Rx.com compares cash prices at more than 60,000 US pharmacies so you can find the lowest price near you.
What are the common side effects of Cromolyn Sodium?
Common side effects of Cromolyn Sodium may include: Fast or uneven heartbeat., Trouble breathing., Itching, rash., Muscle aches.. This is not a complete list — consult your pharmacist or doctor for full side effect information.
Is there a generic version of Cromolyn Sodium?
Generic versions may be available for Cromolyn Sodium. Generics contain the same active ingredients as brand-name drugs and are typically 80–90% cheaper. Search Cromolyn Sodium on Rx.com to compare generic and brand prices at pharmacies near you.
What is the cheapest pharmacy for Cromolyn Sodium?
The cheapest pharmacy for Cromolyn Sodium depends on your location and dosage. Rx.com compares prices at CVS, Walgreens, Walmart, Kroger, Costco, and thousands of independent pharmacies. Enter your ZIP code on Rx.com to find the lowest price for Cromolyn Sodium near you.

Cromolyn Sodium Coupons & Prices

Cromolyn Sodium 26ML of 5.2MG/ACT

Prescriptions & Refills
Licensed US providers · Online visit in minutes
Cromolyn Sodium Bottle — prescription drug image
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Cromolyn Sodium prices by dosage

Lowest cash price with a free Rx.com coupon vs. the average retail price.

Dosage Quantity Retail price Rx.com price
5ml of 100mg/5ml · Bottle 480 $1,435.29 $126.97

Cash prices near ZIP 77433; updated regularly. Actual pharmacy price may vary.

Looking for a cromolyn sodium coupon? Cromolyn sodium is an inexpensive generic mast cell stabilizer, sold under brand names such as Gastrocrom (oral concentrate), NasalCrom (an over-the-counter nasal spray), and Crolom/Opticrom (eye drops). Because it is already a low-cost generic, you often do not need insurance to afford it, but the cash price still varies widely from one pharmacy to the next. Enter your ZIP above to compare cromolyn sodium prices across more than 60,000 pharmacies and use a free Rx.com discount card to see today's lowest price near you.

What is cromolyn sodium and how does it work?

Cromolyn sodium (also called cromoglicic acid or sodium cromoglicate) is a mast cell stabilizer. It works by preventing mast cells from releasing histamine and other inflammatory mediators that trigger allergy and asthma symptoms. It is a preventive, or prophylactic, medicine, not a rescue treatment, so it must be taken on a regular schedule to keep working and does not relieve a symptom that is already happening.

The medicine comes in several formulations, each FDA-approved for different uses: the oral concentrate (Gastrocrom) is used for systemic mastocytosis to relieve symptoms such as diarrhea, flushing, abdominal pain, nausea, headache, and itching or hives; the inhalation solution is used to help prevent asthma attacks and exercise- or allergen-induced bronchospasm; the nasal spray (NasalCrom, sold over the counter) helps prevent and relieve hay fever symptoms; and the ophthalmic solution treats allergic conjunctivitis. Talk with your provider or pharmacist about which form is right for your condition.

How much does cromolyn sodium cost without insurance?

Cromolyn sodium is available as an FDA-approved generic, which keeps its cash price relatively low compared with many brand-name allergy and asthma medicines. Even so, the price for the same formulation can differ a lot between pharmacies, which is exactly why comparing before you fill matters. There is no manufacturer savings card for cromolyn sodium.

Rx.com compares cromolyn sodium prices across more than 60,000 U.S. pharmacies so you can find the lowest cash price near you, with or without insurance. Enter your ZIP above to see today's price and print or show a free Rx.com discount card at the pharmacy counter. Note that the over-the-counter NasalCrom nasal spray can also be bought off the shelf without a prescription.

Cromolyn sodium alternatives and related allergy medicines

Depending on your symptoms, your provider may consider other preventive or allergy medicines. For nasal allergy symptoms, the same active ingredient is sold over the counter as NasalCrom nasal spray. Other commonly used allergy and asthma medicines include montelukast (a leukotriene blocker), the antihistamine nasal spray azelastine, the antihistamine eye/oral drug ketotifen, the steroid nasal spray fluticasone, and the oral antihistamine cetirizine.

These medicines work in different ways and are not interchangeable, so your provider or pharmacist can help you choose. You can compare the cash price of any of these on Rx.com to see which fits your budget.

Safety and side effects

Cromolyn sodium has no boxed warning. Because it is preventive, it should not be used to treat an acute asthma attack or status asthmaticus, as it does not relieve active bronchospasm. It needs regular scheduled dosing to work, and the full benefit can take about 2 to 4 weeks to appear. If you and your provider decide to reduce or stop it for asthma or mastocytosis, taper it gradually rather than stopping abruptly.

The most common side effects depend on the form: headache and diarrhea with the oral concentrate; throat irritation, cough, or wheezing with the inhaled form; and nasal stinging or sneezing with the nasal spray. Rare hypersensitivity reactions, including anaphylaxis, angioedema, and laryngeal edema, have been reported, so get medical help right away for trouble breathing or swelling of the face or throat. Use caution with the oral form if you have liver or kidney problems. This is general information, not medical advice, so check with your provider or pharmacist about your specific situation.

Sources & accuracy

This Cromolyn Sodium information was written and reviewed against authoritative U.S. medical sources — MedlinePlus (U.S. National Library of Medicine), DailyMed, and FDA prescribing information — and checked for accuracy. It is provided for education and is not a substitute for professional medical advice.

Verify the official label: Cromolyn Sodium on DailyMed (FDA)

Reviewed against FDA labeling · Last reviewed July 2026

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Medical disclaimer: This information is provided for general educational purposes only and is not medical advice. It is not a substitute for professional diagnosis or treatment. Always consult a licensed physician, pharmacist, or other qualified healthcare provider before starting, stopping, or changing any medication or treatment. Never disregard professional medical advice or delay seeking it because of something you read here. If you think you may have a medical emergency, call your doctor or 911 immediately.


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