What Is NasalCrom? Uses, Dosage, and What You Need to Know in 2026

NasalCrom is an over-the-counter nasal spray that has been helping allergy sufferers for decades — yet many people have never heard of it. Unlike the steroid nasal sprays that dominate pharmacy shelves, NasalCrom works in a completely different way: it prevents allergy symptoms before they start, rather than reducing inflammation after the fact.

Here's everything you need to know about NasalCrom in 2026.

What Is NasalCrom?

NasalCrom is the brand name for cromolyn sodium nasal spray, made by Prestige Brands Holdings. Each spray delivers 5.2 mg of cromolyn sodium into the nasal passage. It belongs to a class of medications called mast cell stabilizers — the only OTC nasal spray in this category.

NasalCrom is not a steroid, not an antihistamine, and not a decongestant. It is a preventive medication that stops allergy symptoms from developing in the first place.

What Is NasalCrom Used For?

NasalCrom is approved for:

• Seasonal allergic rhinitis (hay fever): Symptoms triggered by pollen, grass, ragweed, mold spores
• Perennial allergic rhinitis: Year-round symptoms from dust mites, pet dander, cockroach allergens, or indoor mold

It relieves the following allergy symptoms when used regularly:

• Runny nose (rhinorrhea)
• Itchy nose
• Sneezing
• Allergic nasal congestion

NasalCrom should not be used for: asthma, sinus infections, common cold symptoms, or non-allergic runny nose.

NasalCrom Dosage: How to Use It

For adults and children age 2 and older:

• Dose: 1 spray into each nostril
• Frequency: Every 4–6 hours (3–4 times per day); maximum 6 times per day
• Best practice: Start 1–2 weeks before allergy season for maximum benefit
• Maximum duration (OTC label): 12 consecutive weeks without consulting a healthcare provider

How to Use NasalCrom Correctly

1. Before first use: Spray into the air several times until you see a fine mist (priming the pump).
2. Blow your nose gently to clear nasal passages.
3. Hold your head upright and place the nozzle about 1/4 to 1/2 inch inside one nostril.
4. Breathe in gently through your nose as you press the pump to spray.
5. Repeat in the other nostril.
6. Do not blow your nose for several minutes after using.
7. Re-prime if not used for more than 2 weeks.
8. Clean the nozzle after each use; do not share the bottle.

Who Can Use NasalCrom?

NasalCrom is appropriate for:

• Adults and children age 2 and older (OTC use)
• Children under 2 with a doctor's supervision
• Adults who prefer a non-steroidal allergy spray
• Pregnant women (consult your OB/GYN first — generally considered low-risk due to minimal systemic absorption)

Do not use NasalCrom if you are allergic to cromolyn sodium or any other ingredients in the product.

Is NasalCrom Available Without a Prescription?

Yes. NasalCrom is an OTC medication available without a prescription at most major pharmacies and online. If you're having trouble finding it, see our guide on how to find NasalCrom in stock near you.

Want to understand the science behind NasalCrom? Read How Does NasalCrom Work? for a plain-English explanation.