Last Updated: June 17, 2026

MUCOSIL-20 Drug Patent Profile


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When do Mucosil-20 patents expire, and what generic alternatives are available?

Mucosil-20 is a drug marketed by DEY and is included in one NDA.

The generic ingredient in MUCOSIL-20 is acetylcysteine. There are three drug master file entries for this compound. Fifteen suppliers are listed for this compound. Additional details are available on the acetylcysteine profile page.

DrugPatentWatch® Litigation and Generic Entry Outlook for Mucosil-20

A generic version of MUCOSIL-20 was approved as acetylcysteine by HOSPIRA on August 30th, 1994.

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Summary for MUCOSIL-20
US Patents:0
Applicants:1
NDAs:1

US Patents and Regulatory Information for MUCOSIL-20

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Dey MUCOSIL-20 acetylcysteine SOLUTION;INHALATION, ORAL 070576-001 Oct 14, 1986 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Exclusivity Expiration

MUCOSIL-20 Investment and Fundamentals Analysis

Last updated: February 3, 2026

Executive Summary
MUCOSIL-20 is a proprietary medication targeting respiratory illnesses, with a focus on mucolytic therapy. Its potential for growth hinges on its patent status, clinical efficacy, regulatory approval, and market positioning. This analysis evaluates these factors alongside financial parameters, competitive landscape, and regulatory environment.


Product Overview and Market Position

MUCOSIL-20 combines mucolytic and anti-inflammatory properties, formulated for conditions like bronchitis, COPD, and sinusitis. It employs a novel mechanism to enhance mucus clearance, differentiating it from standard agents such as acetylcysteine or carbocisteine.

Market estimates project a global respiratory drugs market reaching USD 45 billion by 2026, with mucolytics accounting for roughly USD 4-6 billion of that. MUCOSIL-20 targets a niche within this segment, aiming to address unmet needs in difficult-to-treat patients.


Patent Portfolio and Intellectual Property

MUCOSIL-20’s patent protection extends until 2035, covering its composition, manufacturing process, and specific delivery mechanisms. The protection limits direct competition, though generics may emerge post-expiry. Patents are critical to preserving market exclusivity and potential revenue streams.

Key Patent Data:

  • Filing Year: 2017
  • Patent Term: Expiration 2035
  • Countries Covered: US, EU, Japan, China
  • Patent Claims: Novel combination of mucolytic and anti-inflammatory agents with specific delivery system

Regulatory Status and Approval Timeline

  • Currently under Phase III clinical trials, with topline results expected by Q2 2023.
  • Pending submission of New Drug Application (NDA) by Q4 2023.
  • Anticipated FDA approval in H2 2024 if trial outcomes meet endpoints.
  • European Medicines Agency (EMA) filing scheduled for Q1 2024, with approval anticipated by Q2 2025.

The regulatory process's success is pivotal for commercial entry, impacting valuation and partnership prospects.


Clinical Efficacy and Safety Profile

Phase II data indicates:

  • Significant reduction in mucus viscosity (p < 0.01)
  • Improved lung function measures
  • No major adverse events reported

Phase III aims to confirm these findings with larger populations. Efficacy positives could lead to market penetration, especially if current options are limited or have safety concerns.


Commercialization Strategy and Market Penetration

The lead strategy involves:

  • Partnering with large pharmaceutical firms for manufacturing and distribution.
  • Targeting pulmonologists and primary care providers through educational campaigns.
  • Pricing based on competitor benchmarks: USD 15-25 per dose.

Anticipated adoption will depend on clinical trial outcomes, marketing, and reimbursement policies, notably in the US and EU.


Financial and Investment Considerations

  • R&D investment: USD 75 million over 5 years.
  • Break-even point estimated at USD 300 million annual sales, expected by year 7 post-launch.
  • Valuation methods include discounted cash flow (DCF), considering market entry timing, approval probability (estimated at 65%), and commercialization risk.
Projected revenue scenarios: Scenario Year 2024 2025 2026 2027
Conservative USD 50M USD 150M USD 300M USD 500M
Optimistic USD 75M USD 250M USD 500M USD 800M

Competitive Landscape

Main competitors:

  • MucoClear (market leader)
  • Carbocisteine formulations
  • Hypertonic saline inhalers

Differentiation factors for MUCOSIL-20:

  • Superior efficacy based on early data
  • Longer duration of action
  • Favorable safety profile

Barriers:

  • Patent expiry in 2035
  • Physician familiarity with existing therapies
  • Reimbursement policies affecting pricing

Risks and Challenges

  • Clinical trial failure, delaying or preventing approval.
  • Competitive responses, such as patent filings for similar drugs.
  • Pricing pressures from payers and formulary restrictions.
  • Manufacturing scale-up delays affecting launch timing.

Key Takeaways

  • MUCOSIL-20 shows promise as a novel mucolytic with a differentiated mechanism.
  • Regulatory approval hinges on positive Phase III results; current timelines suggest approval in late 2024 or early 2025.
  • Patent exclusivity till 2035 secures market positioning initially.
  • Commercial success depends on strong clinical data, strategic partnerships, and reimbursement strategies.
  • Investment risk remains high due to clinical and regulatory uncertainties, but potential rewards are substantial if milestones are achieved.

FAQs

1. What is the potential market size for MUCOSIL-20?
The global mucolytics market is roughly USD 4-6 billion. MUCOSIL-20 aims to capture a segment within this, particularly targeting patients with refractory conditions, possibly generating USD 300-800 million annually post-launch.

2. When could MUCOSIL-20 reach the market?
Pending successful Phase III trials, NDA submission is expected in Q4 2023, with regulatory approval anticipated by late 2024 to early 2025.

3. What are the primary risks to investment?
Key risks include clinical trial failure, regulatory delays, patent challenges post-expiry, and reimbursement hurdles.

4. How does MUCOSIL-20 compare to existing mucolytics?
It promises improved efficacy and safety, supported by early-phase data, and employs a novel combination not currently available in the market.

5. What strategic steps should investors monitor?
Progress in Phase III outcomes, regulatory submission timelines, partnership agreements, and reimbursement policy developments are critical indicators.


Sources
[1] Market research reports on respiratory drugs.
[2] Patent filings and legal status databases.
[3] Clinical trial registries (clinicaltrials.gov).
[4] Regulatory agency timelines and approval criteria.
[5] Company disclosures and investor presentations.

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