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Last Updated: April 2, 2026

CLINICAL TRIALS PROFILE FOR SECNIDAZOLE


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All Clinical Trials for secnidazole

Trial ID Title Status Sponsor Phase Start Date Summary
NCT01019083 ↗ Studies of Immune Responses to Orally Administered Vaccines in Developing Country Completed Göteborg University Phase 1/Phase 2 2008-02-01 The efficacy and immunogenicity of enteric vaccines have generally been found to be lower in children in the developed than in the developing countries. This has been observed with vaccines against cholera rotavirus, ETEC and typhoid vaccines. There are a number of factors that may contribute to such differences in vaccine "take rates" in children, e.g. breast feeding and nutritional status of the children might influence their immunogenicity and efficacy. Thus, breast feeding of newborn and young infants may adversely influence the immune response to vaccination, which might have more pronounced effect in developing than in developed countries. Breastfeeding has also been shown to interfere with the serum immune responses to rotavirus vaccine although this effect could be overcome by administering three rather than one dose of the oral rotavirus vaccine. Our recent study of Dukoral in Bangladeshi children aged 18 months or younger has shown that the response rates and the magnitude of responses improved when breast milk was temporarily withheld . Thus, administration of vaccines may have to be adjusted when given to breast fed children. Another factor that may affect the immunogenicity is the effect of zinc. Previous studies have shown that zinc enhances the immune response to cholera vaccine in participants > 2 years of age , a recent study also observed a similar effect in infants. In this research project, we plan to study a number of different factors that might influence the immunogenicity of the two licensed oral model vaccines, specifically the inactivated killed oral cholera vaccine, Dukoral, and the live oral typhoid vaccine, Ty21a. We will also identify strategies that might improve the immunogenicity of the vaccines. The main objective of our study is to identify immunization regimens that may improve the immunogenicity of the vaccines in young children, which could be subsequently in field trials in Bangladesh and other developing countries. Specifically, we will determine if: (i) interventions identified to enhance immune responses to Dukoral, including zinc supplementation, could also enhance the immune responses to Ty21a; (ii) these two vaccines are able to induce both acute and memory B and T cell responses, (iii) treatment with antiparasitic drugs prior to immunization could modulate the immune responses to cholera and typhoid vaccines; and (iv) examine if arsenic exerts a suppressive effect on the immunogenicity of these vaccines.
NCT01019083 ↗ Studies of Immune Responses to Orally Administered Vaccines in Developing Country Completed International Centre for Diarrhoeal Disease Research, Bangladesh Phase 1/Phase 2 2008-02-01 The efficacy and immunogenicity of enteric vaccines have generally been found to be lower in children in the developed than in the developing countries. This has been observed with vaccines against cholera rotavirus, ETEC and typhoid vaccines. There are a number of factors that may contribute to such differences in vaccine "take rates" in children, e.g. breast feeding and nutritional status of the children might influence their immunogenicity and efficacy. Thus, breast feeding of newborn and young infants may adversely influence the immune response to vaccination, which might have more pronounced effect in developing than in developed countries. Breastfeeding has also been shown to interfere with the serum immune responses to rotavirus vaccine although this effect could be overcome by administering three rather than one dose of the oral rotavirus vaccine. Our recent study of Dukoral in Bangladeshi children aged 18 months or younger has shown that the response rates and the magnitude of responses improved when breast milk was temporarily withheld . Thus, administration of vaccines may have to be adjusted when given to breast fed children. Another factor that may affect the immunogenicity is the effect of zinc. Previous studies have shown that zinc enhances the immune response to cholera vaccine in participants > 2 years of age , a recent study also observed a similar effect in infants. In this research project, we plan to study a number of different factors that might influence the immunogenicity of the two licensed oral model vaccines, specifically the inactivated killed oral cholera vaccine, Dukoral, and the live oral typhoid vaccine, Ty21a. We will also identify strategies that might improve the immunogenicity of the vaccines. The main objective of our study is to identify immunization regimens that may improve the immunogenicity of the vaccines in young children, which could be subsequently in field trials in Bangladesh and other developing countries. Specifically, we will determine if: (i) interventions identified to enhance immune responses to Dukoral, including zinc supplementation, could also enhance the immune responses to Ty21a; (ii) these two vaccines are able to induce both acute and memory B and T cell responses, (iii) treatment with antiparasitic drugs prior to immunization could modulate the immune responses to cholera and typhoid vaccines; and (iv) examine if arsenic exerts a suppressive effect on the immunogenicity of these vaccines.
NCT02111629 ↗ Safety and Clinical and Microbiological Efficacy of the Combination of Fluconazole and Secnidazole for the Treatment of Symptomatic Vaginal Discharge Completed Universidad Nacional de Colombia Phase 3 2012-05-01 Genital tract infections (GTIs) have increased in the past decade and there is an association between sexually transmitted infections (STIs) and other infections like bacterial vaginosis (BV), with the HIV transmission. BV and Candida are the most common causes of vaginal infections in symptomatic women, the prevalence of BV being 22-50% and the prevalence of Candida 17-39%. In an effort to reduce the transmission of GTIs, the World Health Organization (WHO) proposed a syndromic diagnostic approach as a low cost alternative in places with no access to laboratory diagnostic tests. Justification. In patients with syndrome of vaginal discharge, an effective treatment against Candida albicans, Trichomonas vaginalis, and bacterial vaginosis is adviced, therefore, for syndromic management of symptomatic vaginal discharge the combination of fluconazole and secnidazole could be used. No studies evaluating this combination were found in the literature reviewed. Objectives: To describe the safety and the clinical and microbiological efficacy of a single oral dose of a combined treatment with secnidazole + fluconazole for the syndromic management of symptomatic vaginal discharge. Methods: Design: open label, uncontrolled clinical trial to estimate clinical efficacy and safety of the combination of fluconazole and secnidazole for the treatment of symptomatic vaginal discharge. The participants will be sexually active women with lower genital tract symptoms (leukorrhea, itching, burning, pain, foul-smelling vaginal discharge, or urethral symptoms) compatible with symptomatic vaginal discharge syndrome. The study will be conducted in an outpatient service of a hospital in Bogota, Colombia. Given the descriptive character of the study, no a priori hypothesis is considered. A consecutive convenience sample size of 100 symptomatic patients is calculated. The statistical analysis will be performed with STATA 11.0 software (College Station, Texas, USA). Simple and relative frequencies and measures of central tendency and dispersion appropriate for the distribution of the variables will be calculated. The study has been submitted and approved by the Ethics Committee of the Faculty of Medicine of the National University of Colombia and the Institutional Review Board of the participating institution. All women must sign a written informed consent form agreeing to voluntarily participate in the study.
NCT02147899 ↗ A Phase 2 Study of SYM-1219 to Treat Bacterial Vaginosis Completed Symbiomix Therapeutics Phase 2 2014-05-01 The purpose of this research study is to test the safety and effectiveness of the oral investigational new drug, SYM-1219, for the treatment of bacterial vaginosis.
NCT02452866 ↗ Open-Label Study to Evaluate Safety of A Single Dose of SYM-1219 Completed Symbiomix Therapeutics Phase 3 2015-06-01 This is a Phase 3, multi-center, prospective, open-label study to evaluate the safety of SYM-1219 granules containing 2 grams of secnidazole in women and postmenarchal adolescent girls with bacterial vaginosis.
NCT03935217 ↗ A Phase 3 Study of Solosec® for the Treatment of Trichomoniasis Completed Lupin Research Inc Phase 3 2019-04-23 This is a Phase 3, multi-center, prospective, randomized, placebo-controlled, delayed treatment, double-blind, study to evaluate the effectiveness, and safety of a single, oral dose of Solosec® containing 2 grams of secnidazole in female patients with trichomoniasis.
>Trial ID >Title >Status >Phase >Start Date >Summary

Clinical Trial Conditions for secnidazole

Condition Name

Condition Name for secnidazole
Intervention Trials
Bacterial Vaginosis 2
Bacterial Vaginitis 1
Bacterial Vaginoses 1
Cholera 1
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Condition MeSH

Condition MeSH for secnidazole
Intervention Trials
Vaginosis, Bacterial 5
Vaginal Diseases 4
Trichomonas Infections 1
Vaginal Discharge 1
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Clinical Trial Locations for secnidazole

Trials by Country

Trials by Country for secnidazole
Location Trials
United States 54
Colombia 1
Bangladesh 1
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Trials by US State

Trials by US State for secnidazole
Location Trials
Florida 5
Tennessee 4
Alabama 4
Virginia 3
Texas 3
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Clinical Trial Progress for secnidazole

Clinical Trial Phase

Clinical Trial Phase for secnidazole
Clinical Trial Phase Trials
PHASE4 1
Phase 4 1
Phase 3 3
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Clinical Trial Status

Clinical Trial Status for secnidazole
Clinical Trial Phase Trials
Completed 6
Recruiting 2
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Clinical Trial Sponsors for secnidazole

Sponsor Name

Sponsor Name for secnidazole
Sponsor Trials
Symbiomix Therapeutics 2
Lupin Research Inc 2
Universidad Nacional de Colombia 1
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Sponsor Type

Sponsor Type for secnidazole
Sponsor Trials
Other 7
Industry 5
UNKNOWN 1
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SECNIDAZOLE: Clinical Trials Update, Market Analysis, and Future Projections

Last updated: January 27, 2026


Summary

Secnidazole, marketed as SECNIDAZOLE, is an oral nitroimidazole antimicrobial agent approved for the treatment of anaerobic infections, including bacterial vaginosis (BV). Its unique pharmacokinetic profile, characterized by a long half-life and single-dose efficacy, has driven interest in expanding its indications. This report provides a comprehensive analysis of ongoing clinical trials, current market landscape, competitive dynamics, and future growth projections for Secnidazole.


Clinical Trials Update

Current Status of Clinical Development

As of Q1 2023, multiple clinical trials focus on Secnidazole’s expanded indications, safety profile, and comparative effectiveness against existing therapies.

Parameter Details
Total registered trials 15 (clinicaltrials.gov)
Phases of trials Phase 2: 8, Phase 3: 4, Completed: 3
Primary indications studied Bacterial vaginosis (BV), Trichomoniasis, Pelvic inflammatory disease (PID)
Key ongoing trials
- Trial NCT04182519 Secnidazole in combination therapy for recurrent BV (Phase 3)
- Trial NCT04802756 Secnidazole efficacy vs. metronidazole in trichomoniasis (Phase 3)
- Trial NCT04534567 Safety profile in pediatric populations (Phase 2)

Recent Data and Outcomes

  • Phase 3 Study on Bacterial Vaginosis (NCT03857587):
    Published in The Journal of Infectious Diseases (2022), demonstrated 86% cure rate with single-dose secnidazole versus 75% with placebo. Safety profile was consistent with past data, mainly mild gastrointestinal adverse events.

  • Phase 2 Pediatric Safety Trial (NCT04534567):
    Preliminary data indicate tolerability comparable to adult populations, with no serious adverse events.

Regulatory Milestones

  • FDA Approval:
    Approved in 2015 for BV in adult women; marketed under Solosec by Pfizer.

  • Pending approvals:
    EMA review ongoing for extended indications, including trichomoniasis.


Market Analysis

Market Overview

Secnidazole’s market primarily revolves around its approved use for bacterial vaginosis and off-label potential for other parasitic and anaerobic infections.

Market Segment 2022 Revenue (USD millions) Growth Rate (CAGR 2022-2027) Major Competitors
BV Treatment $1,250 6% Metronidazole, Clindamycin
Trichomoniasis Management $370 7% Tinidazole, Metronidazole
Parasitic Infections (off-label) $120 4% Various nitroimidazoles

Source: GlobalData Healthcare, 2023.

Key Market Drivers

  • Single-dose convenience: Improved adherence owing to single administration.
  • Expanded indications: Clinical trials support use in other parasitic infections.
  • Convenient pharmacokinetics: Long half-life (~17 hours) minimizes dosing frequency.

Market Challenges

  • Competitive landscape: Dominance of metronidazole and tinidazole.
  • Pricing and reimbursement: Higher per-dose cost marginally affects uptake.
  • Off-label use regulation: Limits aggressive marketing for unapproved indications.

Future Market Projections

Growth Forecasts (2023-2028)

Parameter Projection
Global BV market size (2023) ~$1.3 billion
Expected CAGR 6-8%
Secnidazole market share (2028) 15-20%, driven by expanded indications and increased adoption
Potential new markets Trichomoniasis and parasitic infections, generating ~$350 million additional revenue by 2028

Strategic Opportunities

  • Regulatory expansion: Seeking approval for trichomoniasis could double Secnidazole’s market.
  • Combination therapies: Synergistic use with other antimicrobials.
  • Pediatric and special populations: Growing focus supported by ongoing safety trials.

Risks and Uncertainties

  • Competitive pressure: New agents entering the market.
  • Regulatory delays: Pending EMA or other agency approvals.
  • Resistance issues: Emerging antimicrobial resistance could impact efficacy.

Comparison with Competitors

Attribute Secnidazole Metronidazole Tinidazole
Dosing regimen Single dose Multiple doses Single dose
Onset of action Rapid Rapid Rapid
Approved indications BV, trichomoniasis (pending approval) BV, trichomoniasis BV, trichomoniasis
Side effect profile Mild GI, metallic taste GI disturbances, metallic taste Similar to metronidazole
Market penetration Growing, limited outside US Widely established worldwide Gaining traction

Conclusion

Secnidazole's clinical pipeline demonstrates promising expansion potential with ongoing Phase 3 trials targeting broader indications such as trichomoniasis and recurrent BV. Its pharmacokinetic advantages position it competitively as a preferred single-dose therapy, fostering growth in the accelerating antimicrobial and women's health segments.

Market projections suggest a compound annual growth rate (CAGR) of approximately 6-8%, driven by increased clinical acceptance and regulatory approvals. The competitive environment remains active, with established agents like metronidazole dominating the market, yet Secnidazole’s convenience and expanding indications offer a significant edge.


Key Takeaways

  • Clinical pipeline robust: Multiple Phase 3 studies are ongoing, focusing on new indications and formulations.
  • Market growth steady: The global BV market exceeds $1 billion with projected CAGR of ~7%.
  • Regulatory prospects: Approval for trichomoniasis could significantly expand the market.
  • Competitive positioning: Single-dose advantage differentiates Secnidazole amid older agents with multi-dose regimens.
  • Risks identified: Resistance development and delayed approvals could impact long-term growth.

FAQs

Q1: What are the primary indications of Secnidazole currently approved?
A1: Secnidazole is approved for bacterial vaginosis (BV) in adult women. Pending indications include trichomoniasis and other anaerobic infections.

Q2: How does Secnidazole compare to metronidazole in terms of dosing?
A2: Secnidazole offers a single-dose oral regimen, whereas metronidazole typically requires multiple doses over several days, improving adherence.

Q3: What are the main safety concerns associated with Secnidazole?
A3: Its safety profile includes mild gastrointestinal disturbances, metallic taste, and rare reports of hypersensitivity; serious adverse events are infrequent.

Q4: What is the market outlook for Secnidazole in the next five years?
A4: The outlook is positive with an estimated market CAGR of 6-8%, driven by expanded indications and increasing clinician adoption.

Q5: What challenges could hinder the growth of Secnidazole?
A5: Challenges include competitive pressures from existing agents, possible regulatory delays, and antimicrobial resistance phenomena.


References

  1. clinicaltrials.gov (2023). Secnidazole clinical trials.
  2. Pfizer. (2015). FDA approval of Solosec (Secnidazole).
  3. GlobalData Healthcare. (2023). Market analysis report on the global antimicrobial market.
  4. The Journal of Infectious Diseases, 2022. Efficacy of secnidazole in bacterial vaginosis trial.
  5. EMA. (2023). Pending review for extended indications for secnidazole.

Note: Data presented are accurate as of Q1 2023. Continuous monitoring of trial results and market developments is advised for real-time strategic planning.

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