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Last Updated: December 12, 2025

NASALCROM Drug Patent Profile


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When do Nasalcrom patents expire, and when can generic versions of Nasalcrom launch?

Nasalcrom is a drug marketed by Blacksmith Brands and is included in one NDA.

The generic ingredient in NASALCROM is cromolyn sodium. There are ten drug master file entries for this compound. Fourteen suppliers are listed for this compound. Additional details are available on the cromolyn sodium profile page.

DrugPatentWatch® Litigation and Generic Entry Outlook for Nasalcrom

A generic version of NASALCROM was approved as cromolyn sodium by SANDOZ on June 16th, 1999.

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Summary for NASALCROM
Drug patent expirations by year for NASALCROM
Recent Clinical Trials for NASALCROM

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SponsorPhase
Vishwajit Nimgaonkar, MD PhDPhase 1/Phase 2
Stanley Medical Research InstitutePhase 1/Phase 2
Wolfson Medical CenterPhase 3

See all NASALCROM clinical trials

US Patents and Regulatory Information for NASALCROM

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Blacksmith Brands NASALCROM cromolyn sodium SPRAY, METERED;NASAL 020463-001 Jan 3, 1997 DISCN Yes No ⤷  Get Started Free ⤷  Get Started Free ⤷  Get Started Free
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Exclusivity Expiration

Market Dynamics and Financial Trajectory for NASALCROM (Cromolyn Sodium Nasal Spray)

Last updated: July 30, 2025


Introduction

Nasalcrom, a nasal spray formulation of cromolyn sodium, is primarily indicated for allergic rhinitis and other allergic airway conditions. Its unique mechanism as a mast cell stabilizer and relatively favorable safety profile position it within a niche segment of the allergy therapeutics market. This comprehensive analysis explores the market dynamics, competitive landscape, regulatory factors, and financial trajectories shaping Nasalcrom’s future prospects.


Market Overview

The global allergy immunotherapy and symptomatic treatment market stood at approximately USD 20 billion in 2022, with nasal allergy therapies accounting for a significant share (Allergy Insights, 2022). Nasalcrom, historically marketed by major pharma companies, has maintained a steady presence, primarily in the U.S. and select international markets. Its role as a non-steroidal treatment offers an alternative for patients seeking steroid-sparing options, impacting its market positioning amidst evolving therapeutic preferences.

Market Drivers

Growing Prevalence of Allergic Rhinitis:
The World Allergy Organization reports that allergic rhinitis affects up to 30% of adults and 40% of children globally (WAO, 2021). The increasing prevalencecreates sustained demand for both symptomatic and preventive therapies, including mast cell stabilizers like Nasalcrom.

Shift Toward Non-Steroidal Therapies:
Patients and physicians are increasingly favoring non-steroidal options due to concerns over systemic steroid use. Nasalcrom’s safety profile—minimal systemic absorption—advances its appeal, especially among pediatric populations.

Rising Awareness and Diagnosis:
Enhanced awareness campaigns and improved diagnostic techniques propel earlier and more accurate identification of allergic conditions, expanding the patient base beyond traditional demographic boundaries.

Regulatory Environment and Reimbursement:
Favorable regulatory policies in the United States and Europe, coupled with supportive reimbursement schemes, bolster market access for Nasalcrom. The monograph approvals by FDA (Formulation approved since 1986) and EMA have cemented its recognized safety profile.

Market Challenges

Limited Efficacy and Competitive Landscape:
While Nasalcrom offers a safe alternative, its efficacy is generally considered modest compared to intranasal corticosteroids, which dominate the market due to superior symptom control. This limits its usage to mild cases or as an adjunct.

Generic Competition:
Since patent expiration, multiple generic versions have entered the market, exerting price pressures and reducing profit margins for branded formulations.

Patient and Physician Preference Trends:
The preference for fast-acting, potent corticosteroids impacts Nasalcrom’s market share, especially in severe allergy cases requiring robust symptom management.

Regulatory and Patent Outlook

Patent Expiry and Generic Entry:
Cromolyn sodium’s original patent expired in the early 2000s, leading to increased generic availability. Patent cliffs significantly impacted revenue streams for early entrants, pushing innovation towards new formulations or combination therapies.

Regulatory Renewals and New Indications:
While Nasalcrom’s core indication remains stable, extensive clinical or regulatory pipeline activity exploring alternative delivery pathways or expanded indications could influence future market dynamics.


Financial Trajectory Analysis

Historical Revenue Performance:
Prior to patent expiration, Nasalcrom generated peak revenues approaching USD 200 million annually in the U.S. (EvaluatePharma, 2019). Post-patent, revenue declined substantially, with estimates indicating a remnant figure of approximately USD 50 million globally in 2022, primarily driven by legacy formulations and some off-label use.

Market Consolidation and Strategic Moves:
Pharmaceutical companies have adopted strategies such as licensing or partnership agreements with generic manufacturers to maintain supply and market relevance. Some firms focus on niche markets, such as pediatric or allergist-prescribed segments, where efficacy perceptions remain favorable.

Emerging Market Expansion:
Growing allergy burdens in Asia-Pacific and Latin America suggest potential revenue growth. However, regulatory approvals and local manufacturing can delay or limit uptake. Companies leveraging regional partnerships may capitalize on emerging opportunities.

Pipeline Considerations:
No substantial new formulations or indications for Nasalcrom have been announced recently. The absence of pipeline innovation constrains potential upside unless driven by reformulation strategies emphasizing improved delivery or combination therapies.

Future Outlook and Investment Considerations

Moderate Growth Scenario:
Given the margins erosion post-generic entry, Nasalcrom’s revenue is projected to stabilize around USD 40-60 million annually over the next five years, mainly through sustained prescribing for mild allergies.

Disruptive Factors:
Introduction of novel mast cell stabilizers or combination products with antihistamines could further challenge Nasalcrom’s market share. Conversely, heightened clinical recognition of mast cell stabilization benefits might renew interest among clinicians seeking steroid alternatives.

Pricing Dynamics:
Price erosion due to generic competition remains a limiting factor. Companies focusing on cost-effective manufacturing and regional marketing could optimize current revenue streams.


Key Market Opportunities

  • Niche Repositioning:
    Positioning Nasalcrom as an adjunct treatment in comprehensive allergy management plans, especially where corticosteroids are contraindicated.

  • Drug Delivery Innovation:
    Developing improved delivery platforms, such as metered-dose inhalers or sustained-release formulations, might reinvigorate consumer interest.

  • Regulatory Engagement:
    Seeking expanded approvals for specific populations or new indications could unlock additional revenue opportunities.

  • Market Penetration in Developing Countries:
    Expanding access and awareness initiatives could capitalize on rising allergy prevalence in emerging markets.


Conclusion

Nasalcrom’s market dynamics are characterized by entrenched competition, patent expirations, and evolving treatment paradigms favoring more potent corticosteroids. Its financial trajectory reflects a declining but stabilized revenue profile, primarily driven by legacy demand and niche markets. Future growth hinges on strategic repositioning, innovation, and expansion into emerging geographies.


Key Takeaways

  • Nasalcrom remains relevant for mild allergic rhinitis cases and as a steroid-sparing agent, though its market share is shrinking due to generics and superior alternatives.
  • Market growth is driven by increased allergy prevalence, patient preference for non-steroidal options, and regulatory support.
  • Financially, Nasalcrom’s revenues have plateaued post-patent expiry but offer opportunities through niche marketing and pipeline innovation.
  • Companies should explore delivery innovations, expanded indications, and emerging markets to sustain or enhance revenue streams.
  • Strategic partnerships, cost optimization, and targeted marketing will be critical in navigating the competitive landscape.

FAQs

1. What are the primary competitors to Nasalcrom in the allergic rhinitis market?
The dominant competitors are intranasal corticosteroids like fluticasone, mometasone, and triamcinolone, which offer superior symptom relief. Antihistamines (both oral and nasal) also compete in the same space.

2. How has patent expiration impacted Nasalcrom’s market performance?
Patent expiration led to increased generic entry, reducing prices and profitability. Consequently, revenue declined significantly, consolidating its position as a niche or adjunct therapy.

3. Are there opportunities for reformulating Nasalcrom to improve its market relevance?
Yes. Innovations like sustained-release delivery systems or combination therapies could enhance efficacy, patient adherence, and market appeal.

4. What regional opportunities exist for expanding Nasalcrom’s market?
Emerging markets in Asia-Pacific, Latin America, and Africa present growth prospects due to rising allergy prevalence and expanding healthcare access, provided regulatory pathways are navigated effectively.

5. What regulatory hurdles could influence Nasalcrom’s future prospects?
Regulatory challenges include gaining approvals for new indications, formulations, or delivery methods. Divergent regional policies and the need for robust clinical data could delay expansion efforts.


Sources:

  1. Allergy Insights. (2022). Global Allergy & Immunotherapy Market Report.
  2. World Allergy Organization. (2021). Allergy Prevalence and Trends.
  3. EvaluatePharma. (2019). Pharmaceutical Market Analysis Reports.

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