Last Updated: May 3, 2026

metformin hydrochloride - Profile


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What are the generic sources for metformin hydrochloride and what is the scope of patent protection?

Metformin hydrochloride is the generic ingredient in twenty-one branded drugs marketed by Sun Pharm, Annora Pharma, Bionpharma, Saptalis Pharms, Vistapharm Llc, Ranbaxy, Andrx Labs Llc, Emd Serono Inc, Santarus Inc, Actavis Elizabeth, Actavis Labs Fl Inc, Ajanta Pharma Ltd, Alignscience Pharma, Alkem Labs Ltd, Amneal Pharms Ny, Apotex, Aurobindo Pharma, Aurobindo Pharma Ltd, Barr, Cspc Ouyi, Glenmark Pharms Ltd, Granules, Harman Finochem, Impax Labs, Inventia, Ivax Sub Teva Pharms, Laurus, Lupin Ltd, Macleods Pharms Ltd, Marksans Pharma, Medicap Labs, Micro Labs, Mpp Pharma, Mylan Pharms Inc, Nostrum Pharms Llc, Novast Labs, Pharmobedient, Prinston Inc, Qingdao Baheal Pharm, Ranbaxy Labs Ltd, Regcon Holdings, Rk Pharma, Sandoz, Sciegen Pharms, Sun Pharm Inds (in), Sun Pharm Industries, Teva, Torrent, Torrent Pharms Ltd, Twi Pharms, Unichem, Utopic Pharms, Watson Labs Inc, Yichang Humanwell, Zydus Lifesciences, Aarxion Anda Hlding, Alkem, Aurobindo, Chartwell, Dr Reddys Labs Inc, Epic Pharma Llc, Granules India, Heritage Pharma, Indicus Pharma, Ipca Labs Ltd, Mylan, Provident Pharm, Senores Pharms, Sun Pharm Inds Inc, Sunshine, Torrent Pharms, Watson Labs, Watson Labs Florida, Zydus Hlthcare, Zydus Pharms Usa, Takeda Pharms Usa, Chartwell Rx, Teva Pharms Usa, Novo Nordisk Inc, Sb Pharmco, Astrazeneca Ab, Dr Reddys Labs Sa, Msd Sub Merck, and Ph Health, and is included in one hundred and thirty-two NDAs. There are seven patents protecting this compound and two Paragraph IV challenges. Additional information is available in the individual branded drug profile pages.

Metformin hydrochloride has twenty-nine patent family members in eight countries.

There are eleven tentative approvals for this compound.

Summary for metformin hydrochloride
International Patents:29
US Patents:7
Tradenames:21
Applicants:84
NDAs:132
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for metformin hydrochloride
Generic filers with tentative approvals for METFORMIN HYDROCHLORIDE
Applicant Application No. Strength Dosage Form
⤷  Start Trial⤷  Start Trial500MGTABLET, EXTENDED RELEASE;ORAL
⤷  Start Trial⤷  Start Trial50MG/500MG;50MG/1000MGTABLET;ORAL
⤷  Start Trial⤷  Start Trial1000MGTABLET;FILM COATED

The 'tentative' approval signifies that the product meets all FDA standards for marketing, and, but for the patents / regulatory protections, it would approved.

Paragraph IV (Patent) Challenges for METFORMIN HYDROCHLORIDE
Tradename Dosage Ingredient Strength NDA ANDAs Submitted Submissiondate
RIOMET Oral Solution metformin hydrochloride 500 mg/5 mL 021591 1 2018-02-02
GLUMETZA Extended-release Tablets metformin hydrochloride 500 mg and 1000 mg 021748 1 2009-07-27
FORTAMET Extended-release Tablets metformin hydrochloride 500 mg and 1000 mg 021574 1 2008-10-14

US Patents and Regulatory Information for metformin hydrochloride

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Sun Pharm RIOMET ER metformin hydrochloride FOR SUSPENSION, EXTENDED RELEASE;ORAL 212595-001 Aug 29, 2019 DISCN Yes No ⤷  Start Trial ⤷  Start Trial Y ⤷  Start Trial
Annora Pharma METFORMIN HYDROCHLORIDE metformin hydrochloride SOLUTION;ORAL 215008-001 Mar 13, 2025 AB RX No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Bionpharma METFORMIN HYDROCHLORIDE metformin hydrochloride SOLUTION;ORAL 219151-001 Apr 14, 2025 AB RX 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

Expired US Patents for metformin hydrochloride

Applicant Tradename Generic Name Dosage NDA Approval Date Patent No. Patent Expiration
Andrx Labs Llc FORTAMET metformin hydrochloride TABLET, EXTENDED RELEASE;ORAL 021574-001 Apr 27, 2004 ⤷  Start Trial ⤷  Start Trial
Andrx Labs Llc FORTAMET metformin hydrochloride TABLET, EXTENDED RELEASE;ORAL 021574-002 Apr 27, 2004 ⤷  Start Trial ⤷  Start Trial
Emd Serono Inc GLUCOPHAGE XR metformin hydrochloride TABLET, EXTENDED RELEASE;ORAL 021202-001 Oct 13, 2000 ⤷  Start Trial ⤷  Start Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >Patent No. >Patent Expiration

International Patents for metformin hydrochloride

Country Patent Number Title Estimated Expiration
Australia 2017254908 ⤷  Start Trial
Japan 2018517460 徐放性懸濁組成物用のデュアルチャンバーパック ⤷  Start Trial
Russian Federation 2016147009 ⤷  Start Trial
>Country >Patent Number >Title >Estimated Expiration

Supplementary Protection Certificates for metformin hydrochloride

Patent Number Supplementary Protection Certificate SPC Country SPC Expiration SPC Description
1506211 C 2014 029 Romania ⤷  Start Trial PRODUCT NAME: COMBINATIE DE DAPAGLIFLOZIN SAU O SARE ACCEPTABILAFARMACEUTIC A ACESTUIA SI METFORMINA SAU O SARE ACCEPTABILA FARMACEUTIC A ACESTEIA; NATIONAL AUTHORISATION NUMBER: EU/1/13/900; DATE OF NATIONAL AUTHORISATION: 20140116; NUMBER OF FIRST AUTHORISATION IN EUROPEAN ECONOMIC AREA (EEA): EU/1/13/900; DATE OF FIRST AUTHORISATION IN EEA: 20140116
1412357 PA2008013 Lithuania ⤷  Start Trial PRODUCT NAME: SITAGLIPTINUM PHOSPHAS MONOHYDRICUS, METFORMINI HYDROCHLORIDUM; REG. NO/DATE: EU/1/08/455/001-014 20080716
1532149 132013902118390 Italy ⤷  Start Trial PRODUCT NAME: LINAGLIPTIN + METFORMINA CLORIDRATO(JENTADUETO); AUTHORISATION NUMBER(S) AND DATE(S): DA EU/1/12/780/001 A EU/1/12/780/027, 20120720
>Patent Number >Supplementary Protection Certificate >SPC Country >SPC Expiration >SPC Description

Metformin Hydrochloride: Investment Scenario, Market Dynamics, and Financial Trajectory

Last updated: February 3, 2026

Summary

Metformin hydrochloride, a first-line oral antihyperglycemic agent used primarily in the management of type 2 diabetes mellitus (T2DM), exhibits a robust market characterized by steady growth, expanding indications, and competitive innovation. Driven by the escalating global diabetes prevalence, favorable regulatory landscapes, and patent expirations, the metformin market presents compelling investment opportunities. Its market dynamics are influenced by new formulations, combination therapies, and emerging biosimilars. Financial projections indicate an expected compound annual growth rate (CAGR) of approximately 4-6% over the next five years, with revenues surpassing US$4 billion by 2027.


Market Overview

Parameter Details
Global Market Value (2022) ~$3.0 billion
Projected Market Value (2027) ~$4.5 billion (5-year CAGR: ~6%)
Top Markets United States, Europe, China, India
Major Companies Merck & Co., Teva, Sun Pharma, Hikma, Cipla
Patent Status Expired or nearing expiration for key formulations

Investment Scenario for Metformin Hydrochloride

Current Market Landscape

  • Market Penetration: Over 500 million diabetic patients worldwide, with metformin used in approximately 70-80% of cases globally.
  • Revenue Distribution: High in North America (40%), followed by Europe (25%), Asia-Pacific (30%), and emerging markets (5%).
  • Generic Dominance: Majority of sales stem from generic formulations, with limited proprietary formulations commanding premium prices.

Growth Drivers

  • Rising Diabetes Prevalence: WHO reports (~463 million adults in 2019; projected to reach 700 million by 2045)[1].
  • Early Intervention Strategy: Adoption of metformin as initial therapy recommended by ADA/EASD guidelines.
  • Expanding Indications:
    • Investigations into use for gestational diabetes, polycystic ovary syndrome (PCOS), and oncology.
    • Emerging data on cardiovascular benefits in diabetic and high-risk populations.

Market Challenges

  • Patent Expiry: Multiple patents for immediate-release formulations expired by 2017, leading to generic proliferation.
  • Side Effect Profile: Gastrointestinal disturbances, rare risk of lactic acidosis—continual formulation improvements aim to mitigate these.
  • Regulatory Scrutiny: Variability in regulatory policies regarding manufacturing standards, especially in emerging markets.

Emerging Trends

Trend Impact
Fixed-dose combination drugs Increased patient compliance, higher market share
Extended-release formulations Enhanced tolerability, premium pricing opportunities
Biosimilars and generics Price competition, market expansion
Digital health integration Remote management, adherence boosting

Financial Trajectory and Forecasts

Revenue Projections (2022-2027)

Year Market Revenue (USD billion) CAGR (%) Key Notes
2022 ~$3.0 Baseline
2023 ~$3.2 5.3% Steady growth
2024 ~$3.4 6.2% Increased uptake
2025 ~$3.6 6.0% Expanded indications
2026 ~$4.0 10.0% Generic competition stabilizes
2027 ~$4.5 5.6% Market maturation

(Source: Market Research Future, 2022; Grand View Research, 2023)

Profitability Outlook

  • Pricing: Despite generic market penetration, formulations like extended-release versions command higher margins.
  • Cost Dynamics: Manufacturing economies of scale and increased biosimilar competition lower costs.
  • Margins: EBITDA margins projected to remain stable at 25-30%, supporting sustained investor returns.

Market Comparisons

Aspect Metformin Hydrochloride Other Antidiabetics
Market Size (2022) ~$3 billion SGLT2 inhibitors: ~$6 billion
Growth Rate (2022-2027) ~6% 10-15% in some segments
Patent Status Mostly expired Varies, with many still under patent
Biologics Presence Minimal; primarily small molecules Growing segment

Competitor Analysis

Company Market Share (2022) Key Products Highlights
Merck & Co. 20% Glucophage (brand), generics Market leader, diversified portfolio
TEVA 15% Metformin generics Cost leadership, wide distribution
Sun Pharma 10% Metformin formulations Focus on emerging markets
Hikma 8% Extended-release formulations Innovative delivery systems

Regulatory and Policy Landscape

Region Key Policy Impact
United States (FDA) Oxidative manufacturing standards, off-label use policies Ensures product safety; impacts market entry and pricing
European Union (EMA) Stringent quality controls, reimbursement policies Favors high-quality formulations, limits generic frauds
China & India Price controls, expanded access programs Drive volume sales; pressure on margins
Emerging Markets Variable regulation; increasing access initiatives Market expansion opportunities

Comparison of Formulations and Innovations

Formulation Type Market Adoption Advantages Challenges
Immediate-release (IR) Dominant (~70%) Established, low cost Tolerability issues
Extended-release (XR) Growing (~20%) Better tolerability, adherence Higher manufacturing costs
Fixed-dose combinations Increasing Simplifies regimen Regulatory complexity
Biosimilars Emerging Cost reduction Bioequivalence proof required

Implications for Investors

  • Opportunities:
    • Capitalizing on generic sales in mature markets.
    • Developing or licensing new formulations (XR, combos).
    • Entering emerging markets with low-cost generics.
    • Investing in biosimilar development or digital adherence solutions.
  • Risks:
    • Price erosion due to generics.
    • Regulatory delays or restrictions.
    • Market saturation in core segments.
    • Competition from novel antihyperglycemics (e.g., SGLT2 inhibitors, GLP-1 receptor agonists).

Key Takeaways

  • The metformin hydrochloride market is mature but continues to grow driven by global diabetes prevalence and formulation innovations.
  • Patent expirations have increased generic competition, yet profit margins remain viable through extended-release and combination products.
  • Future growth opportunities lie in emerging markets, biosimilars, and digital health integration.
  • Regulatory policies vary globally and significantly influence market access and pricing strategies.
  • The financial forecast indicates a stable CAGR of 4-6%, with revenues approaching $4.5 billion by 2027.

Frequently Asked Questions (FAQs)

1. What is the current patent status of metformin hydrochloride?
Most patents for immediate-release formulations expired by 2017, leading to widespread generic manufacturing. Proprietary extended-release formulations may have remaining patent protection until the late 2020s or early 2030s, depending on jurisdiction.

2. How does patent expiration affect market growth?
Patent expiry typically reduces prices and shifts sales towards generics, increasing volume but compressing margins. However, innovations in formulations and combination therapies can mitigate revenue losses.

3. What are the primary drivers of investment in metformin?
Global diabetes prevalence, expanding indications, formulation innovations, and growth in emerging markets underpin investment appeal. Additionally, digital health initiatives aim to enhance adherence and patient outcomes.

4. What are the main regulatory challenges?
Regulatory agencies emphasize manufacturing quality, bioequivalence for generics and biosimilars, and safety monitoring. Regulatory uncertainty can delay product approvals or restrict market access.

5. How competitive is the metformin market?
Highly competitive, dominated by generic manufacturers, with limited brand loyalty. Innovations in formulations and combination products support differentiation and higher margins.


References

[1] World Health Organization. Diabetes Fact Sheet, 2019.

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