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Last Updated: March 26, 2026

AMPICILLIN SODIUM Drug Patent Profile


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

Ampicillin Sodium is a drug marketed by Acs Dobfar Spa, Antibiotice, Apothecon, Consolidated Pharm, Eugia Pharma Speclts, Hikma, Hospira, Hq Speclt Pharma, Intl Medication, Istituto Bio Ita Spa, Lilly, Onesource Specialty, Sagent Pharms Inc, Sandoz, and Watson Labs Inc. and is included in twenty-five NDAs.

The generic ingredient in AMPICILLIN SODIUM is ampicillin sodium. There are seventy drug master file entries for this compound. Sixteen suppliers are listed for this compound. Additional details are available on the ampicillin sodium profile page.

DrugPatentWatch® Litigation and Generic Entry Outlook for Ampicillin Sodium

A generic version of AMPICILLIN SODIUM was approved as ampicillin sodium by SANDOZ on December 31st, 1969.

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Summary for AMPICILLIN SODIUM
Drug patent expirations by year for AMPICILLIN SODIUM
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SponsorPhase
The George InstitutePHASE3
Ain Shams UniversityPHASE2
M.D. Anderson Cancer CenterPhase 2

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Pharmacology for AMPICILLIN SODIUM
Medical Subject Heading (MeSH) Categories for AMPICILLIN SODIUM

US Patents and Regulatory Information for AMPICILLIN SODIUM

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Sandoz AMPICILLIN SODIUM ampicillin sodium INJECTABLE;INJECTION 061395-003 Approved Prior to Jan 1, 1982 AP RX No Yes ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Hq Speclt Pharma AMPICILLIN SODIUM ampicillin sodium INJECTABLE;INJECTION 062772-005 Apr 15, 1993 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Hospira AMPICILLIN SODIUM ampicillin sodium INJECTABLE;INJECTION 202864-004 Sep 4, 2015 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Istituto Bio Ita Spa AMPICILLIN SODIUM ampicillin sodium INJECTABLE;INJECTION 201404-001 Dec 20, 2013 AP RX No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Onesource Specialty AMPICILLIN SODIUM ampicillin sodium INJECTABLE;INJECTION 201025-002 Apr 9, 2014 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Intl Medication AMPICILLIN SODIUM ampicillin sodium INJECTABLE;INJECTION 062634-002 Jan 9, 1987 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

AMPICILLIN SODIUM: MARKET DYNAMICS AND FINANCIAL TRAJECTORY

Last updated: February 19, 2026

MARKET OVERVIEW

Ampicillin sodium is a broad-spectrum beta-lactam antibiotic. It is primarily used to treat bacterial infections. Its mechanism of action involves inhibiting bacterial cell wall synthesis. The drug is effective against a range of Gram-positive and Gram-negative bacteria.

The global market for ampicillin sodium is mature. Growth is driven by its established efficacy, low cost, and widespread availability. The drug is listed on the World Health Organization's List of Essential Medicines. This designation reflects its critical role in public health.

Key market segments include hospitals, clinics, and retail pharmacies. The veterinary sector also represents a significant, albeit smaller, market share.

DRUG PROFILE

  • Chemical Name: (2S,5R,6R)-6-[[(2R)-2-amino-2-phenylacetyl]amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid sodium salt
  • CAS Number: 69-53-4
  • Molecular Formula: C₁₆H₁₇N₃NaO₄S
  • Molecular Weight: 371.38 g/mol
  • Therapeutic Class: Antibiotic (Beta-lactam)
  • Indications: Treatment of susceptible bacterial infections, including respiratory tract infections, urinary tract infections, skin and soft tissue infections, and meningitis.
  • Dosage Forms: Injectable powder for reconstitution (intravenous or intramuscular administration).
  • Mechanism of Action: Inhibits bacterial cell wall synthesis by binding to penicillin-binding proteins (PBPs).

MARKET TRENDS AND DRIVERS

The ampicillin sodium market is influenced by several factors. Increased prevalence of bacterial infections globally remains a primary driver. Aging populations in developed countries also contribute to demand due to higher susceptibility to infections.

However, the rise of antibiotic resistance is a significant challenge. This necessitates careful prescription and often limits ampicillin sodium's use to infections known or strongly suspected to be susceptible. The development and adoption of newer antibiotics with broader spectra or improved resistance profiles also exert competitive pressure.

Government initiatives promoting rational antibiotic use and combating antimicrobial resistance (AMR) impact market dynamics. These programs can influence prescribing patterns and potentially lead to decreased utilization of older broad-spectrum antibiotics in some contexts.

KEY MARKET DRIVERS

  • Persistent Bacterial Infection Burden: Continued incidence of common bacterial infections globally.
  • Essential Medicine Status: Inclusion on WHO Model List of Essential Medicines ensures continued accessibility and demand.
  • Cost-Effectiveness: Ampicillin sodium offers a lower cost per dose compared to many newer antibiotics, making it a preferred option in resource-limited settings.
  • Veterinary Applications: Use in animal husbandry for treating and preventing infections in livestock and poultry.

KEY MARKET CHALLENGES

  • Antimicrobial Resistance (AMR): Increasing resistance among target bacterial pathogens reduces the drug's efficacy and narrows its therapeutic window.
  • Competition from Newer Antibiotics: Availability of newer agents with broader spectrums, improved pharmacokinetic profiles, or activity against resistant strains.
  • Regulatory Scrutiny: Stringent regulatory requirements for antibiotic manufacturing and marketing can increase compliance costs.
  • Stewardship Programs: Implementation of antibiotic stewardship programs in healthcare settings encourages judicious use, potentially reducing overall volume.

FINANCIAL TRAJECTORY AND MARKET SIZE

The global ampicillin sodium market is characterized by stable, albeit low, single-digit annual growth. The market is largely driven by generic competition. Prices are highly competitive, with significant volume traded at lower margins.

The market size is estimated to be in the range of several hundred million U.S. dollars annually. Precise figures are difficult to ascertain due to the fragmented nature of the generic market and varying reporting methodologies. However, it remains a substantial market due to high-volume usage.

PROJECTED MARKET GROWTH

Year Estimated Market Size (USD Billions) Compound Annual Growth Rate (CAGR)
2023 0.7 - 0.9 2.0% - 3.5%
2028 0.8 - 1.1 2.0% - 3.5%

Data based on industry analysis and projected market trends. Actual figures may vary.

The financial trajectory is unlikely to see dramatic shifts. Revenue generation is tied to volume rather than significant price appreciation. Manufacturers focus on efficient production to maintain profitability.

COMPETITIVE LANDSCAPE

The ampicillin sodium market is highly competitive and dominated by generic manufacturers. Production is concentrated in regions with established pharmaceutical manufacturing capabilities and favorable cost structures, notably India and China.

Key players include both large multinational pharmaceutical companies with generic divisions and specialized generic drug manufacturers. The competitive advantage lies in manufacturing efficiency, supply chain reliability, and regulatory compliance.

MAJOR MANUFACTURERS (NON-EXHAUSTIVE LIST)

  • Aurobindo Pharma Ltd.
  • Cipla Ltd.
  • Dr. Reddy's Laboratories Ltd.
  • F. Hoffmann-La Roche Ltd. (historically, through legacy products)
  • GSK plc (historically, through legacy products)
  • Mylan N.V. (now part of Viatris Inc.)
  • Pfizer Inc. (historically, through legacy products)
  • Sanofi S.A. (historically, through legacy products)
  • Sino Biopharmaceutical Limited
  • Takeda Pharmaceutical Company Limited (historically, through legacy products)
  • Viatris Inc.

The market is characterized by numerous small to medium-sized manufacturers. These entities often compete on price. Larger players leverage economies of scale and global distribution networks.

REGULATORY ENVIRONMENT

Ampicillin sodium is subject to stringent regulatory oversight by health authorities worldwide, including the U.S. Food and Drug Administration (FDA), the European Medicines Agency (EMA), and national regulatory bodies. Compliance with Good Manufacturing Practices (GMP) is mandatory.

The approval process for generic ampicillin sodium requires demonstrating bioequivalence to the reference listed drug. Post-market surveillance and pharmacovigilance are critical for monitoring safety and efficacy.

KEY REGULATORY CONSIDERATIONS

  • Drug Master Files (DMFs): Manufacturers must maintain comprehensive DMFs detailing manufacturing processes, quality control, and stability data.
  • ANDA/MAA Filings: Generic applications (Abbreviated New Drug Applications in the U.S., Marketing Authorisation Applications in Europe) are required for market entry.
  • Quality Standards: Adherence to pharmacopeial standards (e.g., USP, EP, JP) is essential for product quality and safety.
  • Antimicrobial Stewardship Policies: Increasing focus on responsible antibiotic use by regulatory bodies and healthcare organizations influences prescribing guidelines.
  • Import/Export Regulations: International trade of ampicillin sodium is subject to specific import and export controls and documentation requirements.

PATENT LANDSCAPE

Ampicillin was first patented in the 1950s. Original patents have long since expired. The market is therefore entirely a generic market.

While no new composition of matter patents are expected for ampicillin sodium itself, patents related to manufacturing processes, formulations, or novel delivery systems could emerge. However, the mature nature of the drug makes significant patent-driven innovation unlikely.

PATENT ANALYSIS SUMMARY

  • Original Composition of Matter Patents: Expired decades ago.
  • Process Patents: Potential for patents related to novel, more efficient, or environmentally friendly manufacturing methods. However, the cost-sensitivity of the market limits the premium for such innovations.
  • Formulation Patents: Low probability of significant patent activity given the standard injectable formulation.
  • No New Chemical Entity (NCE) Patents: Ampicillin sodium is a well-established drug.

The lack of patent exclusivity means that pricing and market share are determined by manufacturing costs, distribution efficiency, and market access rather than intellectual property protection.

FUTURE OUTLOOK

The future outlook for ampicillin sodium is characterized by continued demand, albeit with limited growth potential. Its role as an essential, cost-effective antibiotic will sustain its market presence.

The primary threats to its market position are antimicrobial resistance and the availability of newer, more effective alternatives for specific indications. However, for many common infections and in resource-constrained environments, ampicillin sodium will remain a first-line or important second-line therapy.

Investment focus in this market is likely to remain on operational efficiency, cost optimization, and securing reliable supply chains. Companies are unlikely to invest heavily in R&D for ampicillin sodium itself but may explore combinations or improved formulations if a clear unmet need and market advantage can be identified.

The veterinary market offers a stable demand stream that is less impacted by human antibiotic stewardship programs, providing a consistent revenue source.

KEY TAKEAWAYS

  • Ampicillin sodium is a mature, high-volume generic antibiotic with a stable global market.
  • Market growth is modest, driven by its cost-effectiveness and essential medicine status, constrained by antimicrobial resistance and competition.
  • The competitive landscape is dominated by generic manufacturers, with production concentrated in Asia.
  • Original patents have expired; the market is driven by manufacturing efficiency and supply chain reliability.
  • The future outlook remains stable, with continued demand for its essential role in treating bacterial infections, particularly in cost-sensitive markets and veterinary applications.

FREQUENTLY ASKED QUESTIONS

  1. What are the primary therapeutic areas where ampicillin sodium remains a significant treatment option? Ampicillin sodium remains a significant treatment option for respiratory tract infections (e.g., pneumonia, bronchitis), urinary tract infections, skin and soft tissue infections, and certain types of meningitis, provided the causative bacteria are susceptible.

  2. How does the rise of antibiotic resistance impact the demand for ampicillin sodium? The rise of antibiotic resistance directly impacts demand by reducing the spectrum of bacteria susceptible to ampicillin sodium. This leads to treatment failures and encourages the use of alternative antibiotics for infections where resistance is prevalent or suspected.

  3. What is the typical profit margin for generic ampicillin sodium manufacturers? Profit margins for generic ampicillin sodium are generally low due to intense price competition and high production volumes. Manufacturers achieve profitability through economies of scale, efficient manufacturing processes, and tight cost control.

  4. Are there any upcoming regulatory changes that could significantly affect the ampicillin sodium market? While no specific upcoming regulatory changes targeting ampicillin sodium are widely anticipated, broader regulatory trends in antimicrobial stewardship, stricter quality control for generics, and global supply chain resilience initiatives could indirectly influence market dynamics.

  5. Beyond human medicine, what is the significance of the veterinary market for ampicillin sodium? The veterinary market is a significant and relatively stable segment for ampicillin sodium, used for treating and preventing bacterial infections in livestock and poultry. This sector's demand is influenced by animal husbandry practices and food production needs, often operating with different prescribing patterns than human medicine.

CITATIONS

[1] World Health Organization. (2023). World Health Organization Model List of Essential Medicines. WHO. [2] U.S. Food and Drug Administration. (n.d.). Abbreviated New Drug Applications (ANDAs). FDA. [3] European Medicines Agency. (n.d.). Marketing Authorisation Applications. EMA. [4] Various Pharmaceutical Market Research Reports (2020-2023). (Specific report titles and publishers vary and are proprietary).

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