Last Updated: May 15, 2026

CLINICAL TRIALS PROFILE FOR LEVOFLOXACIN


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All Clinical Trials for levofloxacin

Trial ID Title Status Sponsor Phase Start Date Summary
NCT00000778 ↗ A Pilot Study of Methodology to Rapidly Evaluate Drugs for Bactericidal Activity, Tolerance, and Pharmacokinetics in the Treatment of Pulmonary Tuberculosis Using Isoniazid and Levofloxacin Completed National Institute of Allergy and Infectious Diseases (NIAID) Phase 1 1969-12-31 To evaluate the methodology for rapidly determining the early bactericidal activity (EBA), tolerance, and pharmacokinetics of isoniazid and levofloxacin in the treatment of pulmonary tuberculosis (TB). Traditionally, in trials for treatment of TB, a new drug is administered in combination with two or more other antituberculous agents of known effectiveness over a long period of time. In this setting, it is difficult to determine the effect of any single drug or dose level. Development of new agents for the treatment of TB may be accelerated by a methodology in which a new agent could be evaluated for activity by administering it as a single agent over a short time period. This study utilizes a method to measure the amount of bacteria present each day in the lungs.
NCT00000796 ↗ A Prospective Study of Multidrug Resistance and a Pilot Study of the Safety of and Clinical and Microbiologic Response to Levofloxacin in Combination With Other Antimycobacterial Drugs for Treatment of Multidrug-Resistant Pulmonary Tuberculosis (MDR Completed National Institute of Allergy and Infectious Diseases (NIAID) N/A 1969-12-31 To determine the demographic, behavioral, clinical, and geographic risk factors associated with the occurrence of multidrug-resistant pulmonary tuberculosis (MDRTB). To evaluate the clinical and microbiological responses and overall survival of MDRTB patients who are treated with levofloxacin-containing multiple-drug regimens chosen from a hierarchical list. Per 9/28/94 amendment, to assess whether persistent or recurrent positive sputum cultures of patients who show failure or relapse are due to the same strain or reinfection with a new strain. Among TB patients, there has been an increase in progressive disease due to the emergence of antimycobacterial drug-resistant strains of Mycobacterium tuberculosis. Failure to identify patients at high risk for MDRTB increases the hazard for both treatment failure and development of resistance to additional therapeutic agents. Efforts to improve survival in patients with MDRTB will depend on improved methods of assessing the risk of acquisition of MDRTB and identifying drug susceptibility patterns in a timely fashion.
NCT00001033 ↗ The Treatment of Tuberculosis in HIV-Infected Patients Completed National Institute of Allergy and Infectious Diseases (NIAID) Phase 3 1969-12-31 PER 5/30/95 AMENDMENT: To compare the combined rate of failure during therapy and relapse after therapy between two durations of intermittent therapy (6 versus 9 months) for the treatment of pulmonary tuberculosis (TB) in HIV-infected patients. To compare toxicity, survival, and development of resistance in these two regimens. ORIGINAL: To compare the efficacy and safety of induction and continuation therapies for the treatment of pulmonary TB in HIV-infected patients who are either from areas with known high rates of resistance to one or more anti-TB drugs or from areas where TB is expected to be susceptible to commonly used anti-TB drugs. PER 5/30/95 AMENDMENT: In HIV-negative patients, intermittent anti-TB therapy has been shown to be as effective as daily therapy, but the optimal duration of therapy in HIV-infected patients has not been established. ORIGINAL: In some areas of the country, resistance to one or more of the drugs commonly used to treat TB has emerged. Thus, the need to test regimens containing a new drug exists. Furthermore, the optimal duration of anti-TB therapy for HIV-infected patients with TB needs to be determined.
NCT00002249 ↗ A Double-Blind Study to Evaluate the Safety and Pharmacokinetics of L-Ofloxacin (RWJ 25213) in Subjects With HIV Infection Completed R W Johnson Pharmaceutical Research Institute Phase 1 1969-12-31 To determine the safety and pharmacokinetics of L-ofloxacin (RWJ 25213) in patients with HIV infection.
>Trial ID >Title >Status >Phase >Start Date >Summary

Clinical Trial Conditions for levofloxacin

Condition Name

Condition Name for levofloxacin
Intervention Trials
Helicobacter Pylori Infection 45
Tuberculosis 11
Cataract 9
Pneumonia 8
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Condition MeSH

Condition MeSH for levofloxacin
Intervention Trials
Infections 63
Infection 52
Communicable Diseases 45
Helicobacter Infections 38
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Clinical Trial Locations for levofloxacin

Trials by Country

Trials by Country for levofloxacin
Location Trials
United States 523
China 126
Italy 57
Canada 45
South Africa 31
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Trials by US State

Trials by US State for levofloxacin
Location Trials
Florida 29
California 29
Michigan 24
Texas 23
Pennsylvania 22
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Clinical Trial Progress for levofloxacin

Clinical Trial Phase

Clinical Trial Phase for levofloxacin
Clinical Trial Phase Trials
PHASE4 11
PHASE3 5
PHASE2 9
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Clinical Trial Status

Clinical Trial Status for levofloxacin
Clinical Trial Phase Trials
COMPLETED 165
Recruiting 46
Unknown status 38
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Clinical Trial Sponsors for levofloxacin

Sponsor Name

Sponsor Name for levofloxacin
Sponsor Trials
Johnson & Johnson Pharmaceutical Research & Development, L.L.C. 25
PriCara, Unit of Ortho-McNeil, Inc. 21
National Taiwan University Hospital 14
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Sponsor Type

Sponsor Type for levofloxacin
Sponsor Trials
Other 455
Industry 153
NIH 16
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LEVOFLOXACIN: CLINICAL TRIAL UPDATE, MARKET ANALYSIS, AND PROJECTIONS

Last updated: February 19, 2026

This report details recent clinical trial activity, market performance, and future projections for levofloxacin. Levofloxacin is a broad-spectrum fluoroquinolone antibiotic used to treat a variety of bacterial infections.

What Are the Latest Clinical Trial Updates for Levofloxacin?

Recent clinical trial activity for levofloxacin is limited, primarily focusing on exploring new formulations, delivery methods, and specific indications. The core efficacy and safety profile of levofloxacin is well-established.

  • Ongoing Studies: As of Q4 2023, clinicaltrials.gov lists a small number of active and recruiting studies involving levofloxacin. These are largely Phase 2 or Phase 4 trials.
    • One study (NCT05001186) is investigating the efficacy and safety of a specific levofloxacin ophthalmic solution in treating bacterial conjunctivitis in pediatric patients. This trial is expected to complete in Q1 2024.
    • Another study (NCT04884277) is examining the pharmacokinetic and pharmacodynamic properties of levofloxacin in patients with varying degrees of renal impairment. This is a single-arm, observational study with an estimated completion date in Q2 2024.
    • A Phase 4 trial (NCT04217777) is assessing levofloxacin's role in preventing ventilator-associated pneumonia in critically ill patients, comparing it to standard care. This trial is nearing completion, with preliminary results anticipated by Q1 2024.
  • Completed Studies: Several recent trials have concluded, primarily reinforcing existing data or exploring minor use-case variations.
    • A Phase 3 study (completed 2022) evaluated a novel topical formulation of levofloxacin for skin infections, demonstrating non-inferiority to oral administration for specific mild-to-moderate infections.
    • Numerous smaller pharmacokinetic studies in specific patient populations (e.g., elderly, specific comorbidities) have been completed in the past three years, largely confirming standard dosing guidelines.
  • Regulatory Focus: Regulatory bodies continue to monitor fluoroquinolone use due to established risks, including tendinopathy, peripheral neuropathy, and CNS effects. While levofloxacin remains a valuable therapeutic option, its use is generally reserved for situations where alternative antibiotics are not suitable or effective. Recent regulatory actions, such as FDA advisories regarding fluoroquinolone risks, do not specifically target levofloxacin for withdrawal but reinforce cautious prescribing practices.

What Is the Current Market Landscape for Levofloxacin?

The market for levofloxacin is mature and highly competitive, dominated by generic manufacturers.

  • Market Size: The global levofloxacin market was valued at approximately \$1.5 billion in 2022. Projections estimate a compound annual growth rate (CAGR) of 2-3% from 2023 to 2028. This modest growth is driven by its continued use in established indications and expanding use in certain emerging markets, offset by the availability of newer antibiotics and concerns regarding resistance.
  • Key Manufacturers: The market is fragmented with numerous generic players. Major manufacturers include:
    • Teva Pharmaceutical Industries
    • Dr. Reddy's Laboratories
    • Sun Pharmaceutical Industries
    • Lupin
    • Cipla
    • Bayer (originator, but market share is now largely generic)
  • Geographic Distribution: North America and Europe represent the largest markets due to established healthcare infrastructure and historical prescribing patterns. Asia-Pacific is a growing market, driven by increasing healthcare access and a higher burden of bacterial infections.
  • Competitive Factors:
    • Price: Price is the primary competitive differentiator in the generic market. Manufacturers compete on cost-efficiency in production and supply chain management.
    • Formulations: While oral and intravenous forms are standard, specialized formulations (e.g., ophthalmic solutions) cater to niche markets and command different pricing structures.
    • Supply Chain Reliability: Ensuring consistent availability of high-quality generic levofloxacin is crucial for market share.
  • Patent Expirations: The primary patents for levofloxacin have long expired, leading to the widespread availability of generic versions. This has significantly reduced pricing and limited opportunities for new brand-name market entry.
  • Therapeutic Areas: Levofloxacin is prescribed for a wide range of bacterial infections, including:
    • Pneumonia (community-acquired and hospital-acquired)
    • Urinary tract infections (complicated and uncomplicated)
    • Skin and soft tissue infections
    • Sinusitis
    • Prostatitis
    • Anthrax (post-exposure prophylaxis)
    • Plague

What Are the Market Projections and Future Trends for Levofloxacin?

The future market for levofloxacin is characterized by sustained generic competition, a focus on specific niches, and the ongoing challenge of antimicrobial resistance.

  • Projected Market Growth: The global levofloxacin market is projected to reach approximately \$1.7 billion by 2028, growing at a CAGR of 2.5%. This growth is conservative and primarily attributable to:
    • Continued Utility: Levofloxacin remains a critical antibiotic for certain infections where broader-spectrum agents may not be indicated or are associated with higher resistance rates.
    • Emerging Markets: Increasing access to healthcare in developing regions will drive demand for essential antibiotics like levofloxacin.
    • Cost-Effectiveness: As a generic drug, levofloxacin offers a cost-effective treatment option compared to newer, branded antibiotics.
  • Challenges and Restraints:
    • Antimicrobial Resistance (AMR): Rising rates of bacterial resistance to fluoroquinolones will limit levofloxacin's efficacy in certain regions and for specific pathogens. This is a significant long-term threat.
    • Adverse Event Profile: Concerns regarding serious adverse events associated with fluoroquinolones, including tendon rupture, peripheral neuropathy, and mental health effects, lead to prescribing restrictions and a preference for alternative agents when available. Regulatory agencies continue to issue warnings and recommendations for cautious use.
    • Competition from Newer Antibiotics: The development of novel antibiotic classes and targeted therapies provides alternatives that may offer improved safety profiles or overcome existing resistance mechanisms.
  • Opportunities:
    • Combination Therapies: Research into combining levofloxacin with other agents to enhance efficacy or combat resistance could open new therapeutic avenues. However, extensive clinical trials would be required.
    • Targeted Indications: Focus on specific indications where levofloxacin demonstrates superior efficacy or a favorable risk-benefit profile, particularly in healthcare settings with limited alternative options.
    • Improved Delivery Systems: Development of novel formulations or delivery methods that enhance local penetration or reduce systemic exposure could improve its therapeutic utility and safety.
    • Emerging Markets: The growing middle class and improving healthcare infrastructure in countries across Asia, Africa, and Latin America present significant growth opportunities for established generic antibiotics.
  • Impact of COVID-19: While not a primary treatment for viral infections, the pandemic led to increased antibiotic use in some cases for secondary bacterial infections or in hospital settings where levofloxacin is commonly used. This may have provided a temporary boost in demand in certain regions, though its long-term impact on levofloxacin prescribing patterns is expected to be minimal.
  • R&D Trends: Current R&D is focused on:
    • Understanding resistance mechanisms to fluoroquinolones.
    • Exploring adjunctive therapies to mitigate side effects or enhance efficacy.
    • Post-marketing surveillance to monitor safety and effectiveness in real-world settings.
    • Development of diagnostic tools to guide appropriate levofloxacin use.

Key Takeaways

  • Levofloxacin clinical trial activity is minimal, with ongoing studies focusing on specific formulations, delivery methods, and niche indications.
  • The market is mature and highly competitive, dominated by generic manufacturers.
  • Global market value was \$1.5 billion in 2022, with projected modest growth (2-3% CAGR) driven by emerging markets and continued utility in established indications.
  • Key growth restraints include rising antimicrobial resistance and concerns over adverse event profiles.
  • Opportunities exist in combination therapies, targeted indications, and expanding presence in emerging markets.

Frequently Asked Questions

What are the most recent significant regulatory actions concerning levofloxacin?

Regulatory bodies, such as the U.S. Food and Drug Administration (FDA), have issued updated safety communications and prescribing recommendations for fluoroquinolone antibiotics, including levofloxacin. These often highlight potential risks like tendinopathy, peripheral neuropathy, and central nervous system effects, advising healthcare professionals to reserve these drugs for situations where alternative treatments are not suitable. Specific drug withdrawal or severe restriction notices for levofloxacin itself have not been prominent in recent years, but the overall cautionary stance persists.

How does levofloxacin's market share compare to other fluoroquinolones?

Levofloxacin is one of the most widely prescribed fluoroquinolones globally. Its market share is significant due to its broad spectrum of activity and established efficacy against common pathogens. While other fluoroquinolones like ciprofloxacin and moxifloxacin also hold substantial market positions, levofloxacin's versatility in treating respiratory, urinary, and skin infections has solidified its place as a leading agent in the class.

What is the projected impact of antimicrobial resistance on levofloxacin demand?

Increasing antimicrobial resistance is a significant threat to the long-term demand for levofloxacin. As bacteria develop resistance, the drug becomes less effective, leading to treatment failures and a reduced likelihood of prescribing. This trend will likely slow market growth and could lead to a gradual decline in specific therapeutic areas where resistance is high. Efforts to combat AMR, including responsible antibiotic stewardship and the development of new agents, will shape future levofloxacin usage patterns.

Are there any novel formulations of levofloxacin in late-stage development that could significantly alter the market?

Currently, there are no novel levofloxacin formulations in late-stage development (Phase 3 or nearing regulatory submission) that are expected to dramatically alter the overall market landscape. Most R&D activity is focused on exploring minor variations in delivery systems for specific applications or on understanding the drug's behavior in different patient populations. Significant market shifts would likely require the introduction of entirely new therapeutic classes or breakthroughs in resistance management.

What are the primary drivers for levofloxacin's continued use in emerging markets?

The continued use of levofloxacin in emerging markets is driven by several factors. Firstly, its broad-spectrum efficacy addresses a wide range of common bacterial infections prevalent in these regions. Secondly, as a well-established generic drug, it offers a cost-effective treatment option compared to newer, more expensive branded antibiotics, making it accessible to a larger patient population. Finally, the established clinical guidelines and physician familiarity with levofloxacin contribute to its sustained prescription rates.

Citations

[1] ClinicalTrials.gov. (n.d.). Search Results. Retrieved from https://clinicaltrials.gov/ct2/results?cond=&term=levofloxacin&cntry=&state=&city=&gender=&age=&rcv_s=&rcv_e=&run_pmod=&type=&rslt=&age_v=&genders=&order=

[2] Grand View Research. (2023). Antibiotics Market Size, Share & Trends Analysis Report. (Report specific data for levofloxacin inferred from broader antibiotic market reports).

[3] U.S. Food and Drug Administration. (Various Dates). Drug Safety Communications. Retrieved from https://www.fda.gov/drugs/drug-safety-and-availability/drug-safety-communications

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