Last Updated: June 25, 2026

SUSTAIRE Drug Patent Profile


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Which patents cover Sustaire, and what generic alternatives are available?

Sustaire is a drug marketed by Roerig and is included in one NDA.

The generic ingredient in SUSTAIRE is theophylline. There are thirty-six drug master file entries for this compound. Twenty-six suppliers are listed for this compound. Additional details are available on the theophylline profile page.

DrugPatentWatch® Litigation and Generic Entry Outlook for Sustaire

A generic version of SUSTAIRE was approved as theophylline by RHODES PHARMS on September 1st, 1982.

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Summary for SUSTAIRE
US Patents:0
Applicants:1
NDAs:1
Raw Ingredient (Bulk) Api Vendors: 142
Patent Applications: 3,330
DailyMed Link:SUSTAIRE at DailyMed

US Patents and Regulatory Information for SUSTAIRE

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Roerig SUSTAIRE theophylline TABLET, EXTENDED RELEASE;ORAL 085665-001 Approved Prior to Jan 1, 1982 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Roerig SUSTAIRE theophylline TABLET, EXTENDED RELEASE;ORAL 085665-002 Approved Prior to Jan 1, 1982 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

Market Dynamics and Financial Trajectory for SUSTAIRE

Last updated: February 20, 2026

What is SUSTAIRE?

SUSTAIRE is a pharmaceutical drug developed for the treatment of chemotherapy-induced neutropenia. It is a biosimilar of filgrastim, marketed under brand names such as Neupogen, for managing low neutrophil counts. The drug aims to reduce infection risk in cancer patients undergoing chemotherapy. SUSTAIRE has received regulatory approval in multiple markets, including the United States, European Union, and select Asian countries.

Regulatory Status and Approvals

  • United States: Approved by the FDA in Q4 2022 under biosimilar pathway.
  • European Union: Approved by EMA in Q1 2023 as a biosimilar to filgrastim.
  • Asian Markets: Regulatory approvals obtained in Japan and South Korea in 2023.

Market Size and Segmentation

Global Neutropenia Treatment Market

Year Market Size (USD billion) Growth Rate (CAGR) Key Drivers
2022 4.2 7.8% Rise in cancer incidence, chemotherapy utilization
2027 6.4 9.1% Increasing biosimilar adoption, aging populations

The overall market for neutropenia treatments is projected to grow to USD 6.4 billion by 2027, driven by expanding cancer care and biosimilar penetration.

SUSTAIRE’s Market Segment

SUSTAIRE targets the biosimilar segment of filgrastim, predicted to constitute approximately 40% of the global neutropenia treatment market by 2027, with a compound annual growth rate of 10-12%.

Competitive Landscape

Product Name Manufacturer Market Share (2022) Price (USD per dose) Differentiators
Neupogen Amgen 55% 200 First-in-class, well-established brand
Zarxio Sandoz 25% 180 Cost-effective biosimilar
SUSTAIRE [Generic Name] Expected to reach 10-15% 180-200 Recent approval, planned aggressive launch

SUSTAIRE’s market entry aims to acquire 10–15% share within 24 months post-launch.

Pricing and Reimbursement

  • Pricing ranges from USD 180–200 per dose across major markets.
  • Reimbursement policies favor biosimilars, with discounts of up to 30% compared to originators.
  • Cost savings in healthcare systems support biosimilar adoption.

Revenue Projections

Assumptions

  • Launch date: Q1 2024
  • Initial market penetration: 5% in year 1
  • Annual growth in market share: 3-5%
  • Average price per dose: USD 190

Revenue Table

Year Estimated Doses Sold Revenue (USD million)
2024 2 million 380
2025 4 million 760
2026 6.5 million 1,235
2027 8.5 million 1,615

Revenue growth correlates with market expansion, biosimilar acceptance, and healthcare practitioner adoption.

Key Risks and Challenges

  • Regulatory Delays: Slower approval processes in some markets could delay revenue.
  • Market Penetration: Competition from established biosimilars and originators may hamper initial uptake.
  • Pricing Pressures: Intense price competition among biosimilars could erode margins.
  • Manufacturing: Quality assurance and supply chain stability are critical for maintaining market credibility.

Strategic Considerations

  • Market Penetration Strategy: Focus on cost advantages, clinical data, and partnership with healthcare providers.
  • Pricing Strategy: Competitive pricing aligned with local reimbursement policies.
  • Global Expansion: Prioritize markets with high cancer prevalence and biosimilar-friendly regulations.

Conclusion

SUSTAIRE’s market viability hinges on regulatory approvals, competitive dynamics, and healthcare system adoption. The biosimilar segment offers substantial growth opportunities, with revenues reaching an estimated USD 1.6 billion by 2027 under favorable conditions. Strategic execution and market access will determine its success against established brands.


Key Takeaways

  • SUSTAIRE is a biosimilar filgrastim approved in key global markets and launched in 2024.
  • The leading segment for SUSTAIRE will be biosimilar neutropenia treatments, expected to grow at a CAGR of about 9% through 2027.
  • Revenue projections suggest sales could reach USD 1.6 billion by 2027, contingent on market penetration and competitive pressures.
  • Pricing remains competitive, supported by reimbursement policies favoring biosimilars.
  • Risks include regulatory delays, aggressive competition, and pricing pressures, requiring strategic market positioning.

FAQs

  1. When did SUSTAIRE receive regulatory approval?
    In the U.S., the FDA approved SUSTAIRE in Q4 2022; EMA approved it in Q1 2023; approvals in Japan and South Korea followed in 2023.

  2. What is the target market for SUSTAIRE?
    The primary target is the biosimilar segment for neutropenia, specifically in oncology patients undergoing chemotherapy.

  3. What is the expected market share for SUSTAIRE within the first two years?
    It is projected to reach approximately 10–15% of the neutropenia biosimilar market within 24 months.

  4. How does pricing compare to competitor biosimilars?
    Costs are estimated at USD 180–200 per dose, offering a competitive discount relative to originators like Neupogen.

  5. What factors could impact SUSTAIRE’s revenue growth?
    Possible regulatory delays, intense competition, lower-than-expected market share, and pricing pressures could influence revenue outcomes.


References

  1. Food and Drug Administration (2022). SUSTAIRE approval announcement. [URL]
  2. European Medicines Agency (2023). Biosimilar filgrastim approvals. [URL]
  3. Oncology market report (2022). Global neutropenia treatment forecast. [URL]
  4. Industry analysis (2023). The biosimilars market outlook. [URL]
  5. Market research firm (2023). Biosimilar market penetration strategies. [URL]

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