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Last Updated: March 21, 2025

CLINICAL TRIALS PROFILE FOR SULFAMETHOXAZOLE


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505(b)(2) Clinical Trials for Sulfamethoxazole

This table shows clinical trials for potential 505(b)(2) applications. See the next table for all clinical trials
Trial Type Trial ID Title Status Sponsor Phase Start Date Summary
New Combination NCT03431168 ↗ A Novel Regimen to Prevent Malaria and STI in Pregnant Women With HIV Active, not recruiting University of Alabama at Birmingham Phase 2 2018-03-07 More than 3 billion people worldwide are at risk of acquiring malaria and pregnant women living with HIV in Africa are at particular risk. An effective prophylaxis regimen capable of preventing malaria and other common perinatal infections would have great potential to improve adverse birth outcomes. The purpose of this randomized controlled trial is to evaluate a new combination prophylaxis regimen in pregnant women with HIV in Cameroon to determine its efficacy and safety.
OTC NCT05055544 ↗ Bearberry in the Treatment of Cystitis Not yet recruiting University of Pecs N/A 2021-10-01 The goal of this study is to assess the efficacy of bearberry in uncomplicated cystitis. Uncomplicated cystitis is a disease related to the infection of the urinary bladder. Typical symptoms are dysuria, urinary urgency, and frequent voiding of small volumes. Urinary tract infections are frequent in women, usually treated with antibiotics, since the disease is usually caused by bacteria. Fosfomycin is a frequently used antibiotic for the treatment of uncomplicated cystitis. This medicine is typically prescribed by MDs. However, since uncomplicated cystitis is quite frequent, not all patients visit the doctor when experiencing the symptoms of this disease. The use of over-the-counter products (medicines and food supplements) to alleviate the symptoms is common. One of the most frequently used medicinal plants for this purpose is bearberry. Bearberry is a medicinal plant traditionally used for the treatment of cystitis. Its use is accepted by the European Medicine Agency as traditional herbal medicinal product for relief of symptoms of mild recurrent lower urinary tract infections such as burning sensation during urination and/or frequent urination in women. Although the experience gained during the traditional use and the laboratory experiments support the supposed beneficial effect of bearberry, its clinical efficacy has not been confirmed in well-designed clinical trials in comparison with standard antibiotic therapy. In this study, the efficacy of bearberry will be assessed in comparison with fosfomycin. Premenopausal women experiencing the symptoms of uncomplicated cystitis will be randomly divided into two groups. Since it will be a double-blind trial, neither the participants nor the experimenters will know who is receiving a particular treatment. In group A, patients will receive a single dose of fosfomycin powder dissolved in water and 2 placebo tablets three times a day for 7 days. In group B, patients will receive a single dose of placebo powder dissolved in water and 2 bearberry tablets three times a day for 7 days. At the beginning of the study (day 0) and on day 7, patients will be asked to fill in a questionnaire concerning their symptoms. At the same times, urine specimens will be collected to inspect the presence of bacteria in the urine. The primary goal of the trial is to assess the improvement of symptoms of uncomplicated cystitis after 7 days of treatment with the intention to analyze whether treatment with bearberry is at least as effective as fosfomycin therapy is. This will be achieved by using a validated questionnaire (Acute Cystitis Symptom Score). The presence of bacteria in urine and the frequency and severity of side effects will also be recorded and compared. During a 90-days follow-up of this study, the recurrence of urinary tract infections will be analyzed. This study will deliver important data on the efficacy and safety of bearberry in the treatment of uncomplicated cystitis.
>Trial Type >Trial ID >Title >Status >Phase >Start Date >Summary

All Clinical Trials for Sulfamethoxazole

Trial ID Title Status Sponsor Phase Start Date Summary
NCT00000640 ↗ A Phase III Comparative Study of Dapsone / Trimethoprim and Clindamycin / Primaquine Versus Sulfamethoxazole / Trimethoprim in the Treatment of Mild-to-Moderate PCP in Patients With AIDS Completed Glaxo Wellcome Phase 3 1969-12-31 To evaluate the effectiveness of two oral treatments for mild to moderate Pneumocystis carinii pneumonia (PCP): dapsone/trimethoprim or clindamycin/primaquine as compared to a standard treatment program of sulfamethoxazole/trimethoprim (SMX/TMP) to assess the tolerance of these two alternative treatments as compared to the standard treatment of SMX/TMP. Per 09/09/92 amendment, to assess the efficacy and tolerance of these two alternative treatments in patients who are intolerant to SMX/TMP. The type of treatment being studied has the advantages of wide applicability throughout the world (including developing countries) and low cost. An oral treatment is more accessible to patients than drugs given by injection or by inhalation.
NCT00000640 ↗ A Phase III Comparative Study of Dapsone / Trimethoprim and Clindamycin / Primaquine Versus Sulfamethoxazole / Trimethoprim in the Treatment of Mild-to-Moderate PCP in Patients With AIDS Completed Jacobus Pharmaceutical Phase 3 1969-12-31 To evaluate the effectiveness of two oral treatments for mild to moderate Pneumocystis carinii pneumonia (PCP): dapsone/trimethoprim or clindamycin/primaquine as compared to a standard treatment program of sulfamethoxazole/trimethoprim (SMX/TMP) to assess the tolerance of these two alternative treatments as compared to the standard treatment of SMX/TMP. Per 09/09/92 amendment, to assess the efficacy and tolerance of these two alternative treatments in patients who are intolerant to SMX/TMP. The type of treatment being studied has the advantages of wide applicability throughout the world (including developing countries) and low cost. An oral treatment is more accessible to patients than drugs given by injection or by inhalation.
NCT00000640 ↗ A Phase III Comparative Study of Dapsone / Trimethoprim and Clindamycin / Primaquine Versus Sulfamethoxazole / Trimethoprim in the Treatment of Mild-to-Moderate PCP in Patients With AIDS Completed National Institute of Allergy and Infectious Diseases (NIAID) Phase 3 1969-12-31 To evaluate the effectiveness of two oral treatments for mild to moderate Pneumocystis carinii pneumonia (PCP): dapsone/trimethoprim or clindamycin/primaquine as compared to a standard treatment program of sulfamethoxazole/trimethoprim (SMX/TMP) to assess the tolerance of these two alternative treatments as compared to the standard treatment of SMX/TMP. Per 09/09/92 amendment, to assess the efficacy and tolerance of these two alternative treatments in patients who are intolerant to SMX/TMP. The type of treatment being studied has the advantages of wide applicability throughout the world (including developing countries) and low cost. An oral treatment is more accessible to patients than drugs given by injection or by inhalation.
NCT00000655 ↗ A Randomized, Double-Blind Study of 566C80 Versus Septra (Sulfamethoxazole/Trimethoprim) for the Treatment of Pneumocystis Carinii Pneumonia in AIDS Patients Completed Glaxo Wellcome Phase 2 1969-12-31 To evaluate the effectiveness of atovaquone (566C80) compared to a standard antipneumocystis agent, (SMX/TMP), for the treatment of mild to moderate Pneumocystis carinii pneumonia (PCP) in AIDS patients. To compare the safety of short-term (21 days) treatment with 566C80 and SMX/TMP in AIDS patients with an acute episode of PCP. Standard therapies for acute treatment of PCP involve either SMX/TMP or pentamidine isetionate. Although both treatments are equally effective, side effects prevent completion of therapy in 11-55 percent of patients.
NCT00000655 ↗ A Randomized, Double-Blind Study of 566C80 Versus Septra (Sulfamethoxazole/Trimethoprim) for the Treatment of Pneumocystis Carinii Pneumonia in AIDS Patients Completed National Institute of Allergy and Infectious Diseases (NIAID) Phase 2 1969-12-31 To evaluate the effectiveness of atovaquone (566C80) compared to a standard antipneumocystis agent, (SMX/TMP), for the treatment of mild to moderate Pneumocystis carinii pneumonia (PCP) in AIDS patients. To compare the safety of short-term (21 days) treatment with 566C80 and SMX/TMP in AIDS patients with an acute episode of PCP. Standard therapies for acute treatment of PCP involve either SMX/TMP or pentamidine isetionate. Although both treatments are equally effective, side effects prevent completion of therapy in 11-55 percent of patients.
NCT00000666 ↗ A Randomized Prospective Study of Pyrimethamine Therapy for Prevention of Toxoplasmic Encephalitis in HIV-Infected Individuals With Serologic Evidence of Latent Toxoplasma Gondii Infection Completed National Institute of Allergy and Infectious Diseases (NIAID) N/A 1969-12-31 To evaluate pyrimethamine as a prophylactic agent against toxoplasmic encephalitis in individuals who are coinfected with HIV and latent Toxoplasma gondii. Toxoplasmic encephalitis is a major cause of illness and death in AIDS patients. Standard treatment for toxoplasmic encephalitis is to combine pyrimethamine and sulfadiazine. Continuous treatment is necessary to prevent recurrence of the disease, but constant use of pyrimethamine/sulfadiazine is associated with toxicity. Clindamycin has been shown to be effective in treatment of toxoplasmic encephalitis in animal studies. This study evaluates pyrimethamine as a preventive treatment against toxoplasmic encephalitis (per 3/26/91 amendment, clindamycin arm was discontinued).
>Trial ID >Title >Status >Phase >Start Date >Summary

Clinical Trial Conditions for Sulfamethoxazole

Condition Name

Condition Name for Sulfamethoxazole
Intervention Trials
HIV Infections 36
Pneumonia, Pneumocystis Carinii 27
Urinary Tract Infections 9
Urinary Tract Infection 8
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Condition MeSH

Condition MeSH for Sulfamethoxazole
Intervention Trials
HIV Infections 39
Infections 38
Pneumonia 36
Infection 34
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Clinical Trial Locations for Sulfamethoxazole

Trials by Country

Trials by Country for Sulfamethoxazole
Location Trials
United States 407
China 17
France 16
Canada 16
Mexico 7
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Trials by US State

Trials by US State for Sulfamethoxazole
Location Trials
California 32
New York 25
Illinois 24
Texas 22
Pennsylvania 20
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Clinical Trial Progress for Sulfamethoxazole

Clinical Trial Phase

Clinical Trial Phase for Sulfamethoxazole
Clinical Trial Phase Trials
Phase 4 29
Phase 3 38
Phase 2/Phase 3 6
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Clinical Trial Status

Clinical Trial Status for Sulfamethoxazole
Clinical Trial Phase Trials
Completed 93
Terminated 16
Recruiting 15
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Clinical Trial Sponsors for Sulfamethoxazole

Sponsor Name

Sponsor Name for Sulfamethoxazole
Sponsor Trials
National Institute of Allergy and Infectious Diseases (NIAID) 32
M.D. Anderson Cancer Center 10
Glaxo Wellcome 8
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Sponsor Type

Sponsor Type for Sulfamethoxazole
Sponsor Trials
Other 192
NIH 53
Industry 42
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Sulfamethoxazole: Clinical Trials, Market Analysis, and Projections

Introduction

Sulfamethoxazole, a widely used antibiotic, has been a cornerstone in the treatment of various bacterial infections for decades. This article delves into the current clinical trials, market analysis, and future projections for this drug.

Clinical Trials Update

Current Studies on Sulfamethoxazole

One of the significant ongoing clinical trials involving sulfamethoxazole is the comparison of its efficacy with doxycycline in treating skin and soft tissue infections (SSTIs), particularly those caused by Methicillin-resistant Staphylococcus aureus (CA-MRSA)[1].

  • Study Design: This is a Phase IIb multicenter, randomized, double-blind trial enrolling 462 subjects with abscess or cellulitis. Participants are treated with either doxycycline (DOXY) or trimethoprim-sulfamethoxazole (TMP-SMX).
  • Objectives: The trial aims to compare the cure rates, adverse event rates, relapse and recurrence rates, and treatment failure rates between the two antibiotic regimens.
  • Location and Sponsor: The study is conducted at UCLA and sponsored by the Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center.

Efficacy in Preventing Pneumocystis Pneumonia (PCP)

Another important area of research involves the use of trimethoprim-sulfamethoxazole (TMP-SMZ) in preventing PCP in immunocompromised patients, particularly those who are HIV-negative. A systematic review and meta-analysis have shown that TMP-SMZ significantly reduces the incidence of PCP in this population, although it is associated with a higher rate of drug discontinuation due to adverse events[3].

Market Analysis

Global Market Size and Growth

The global sulfamethoxazole market is expected to grow steadily over the next few years. Here are some key points from recent market reports:

  • Current Market Size: As of 2023, the global sulfamethoxazole market size was estimated to be significant, with a compound annual growth rate (CAGR) projected to continue through 2031[2][5].
  • Regional Analysis: The market is segmented into major regions including North America, Europe, Asia Pacific, Middle East & Africa, and Latin America. Each region's revenue share, current trends, and future growth prospects are analyzed in detail[2][5].
  • Segment Analysis: The market is segmented by type and application. Sulfamethoxazole is used in various forms and for different indications, such as urinary tract infections, bronchitis, and prostatitis. The report provides insights into the most lucrative segments and their expected growth rates[2].

Market Drivers and Restraints

Several factors drive the growth of the sulfamethoxazole market:

  • Increasing Bacterial Infections: The rise in bacterial infections, particularly those resistant to other antibiotics, drives the demand for sulfamethoxazole.
  • Combination Therapy: The use of sulfamethoxazole in combination with trimethoprim (TMP-SMX) as a first-choice treatment for urinary tract infections and other bacterial infections is a significant market driver[4].

However, there are also restraints:

  • Adverse Effects: Sulfamethoxazole is known to cause gastrointestinal disturbances and allergic skin reactions, which can limit its use in some patients[4].
  • Resistance and Side Effects: Increasing resistance to sulfamethoxazole and its combination with trimethoprim, along with the higher rate of drug discontinuation due to adverse events, are potential restraints[1][3].

Market Projections

Forecast Period

The forecast period for the sulfamethoxazole market extends from 2024 to 2031. Here are some key projections:

  • Revenue Growth: The market is expected to see significant revenue growth during this period, driven by increasing demand and the lack of effective alternative treatments for certain bacterial infections[2][5].
  • Regional Growth: Asia Pacific and Latin America are expected to be among the fastest-growing regions due to increasing healthcare expenditure and a rising incidence of bacterial infections[2][5].

Competitive Analysis

The sulfamethoxazole market is competitive, with several key players involved in the production and distribution of the drug. The market report provides a detailed competitor analysis, including market share, product offerings, and strategic initiatives[2][5].

Key Applications and Therapeutic Areas

Bacterial Infections

Sulfamethoxazole is primarily used to treat bacterial infections such as urinary tract infections, bronchitis, and prostatitis. It works by inhibiting bacterial folic acid synthesis through its action on the enzyme dihydropteroate synthase (DHPS)[4].

Preventive Use

In addition to its therapeutic use, sulfamethoxazole, in combination with trimethoprim, is used prophylactically to prevent PCP in immunocompromised patients. This application is particularly important in HIV-negative immunodeficient populations[3].

Conclusion

Sulfamethoxazole remains a crucial antibiotic in the treatment and prevention of various bacterial infections. Ongoing clinical trials, such as the comparison with doxycycline for SSTIs, will provide valuable insights into its efficacy and safety. The market for sulfamethoxazole is expected to grow, driven by increasing demand and the lack of effective alternatives.

Key Takeaways

  • Clinical Trials: Ongoing trials compare sulfamethoxazole with doxycycline for SSTIs and evaluate its prophylactic use in preventing PCP.
  • Market Growth: The global sulfamethoxazole market is projected to grow significantly from 2024 to 2031.
  • Regional Analysis: Asia Pacific and Latin America are expected to be key growth regions.
  • Applications: Sulfamethoxazole is used to treat urinary tract infections, bronchitis, and prostatitis, and is also used prophylactically to prevent PCP.

FAQs

What is the primary use of sulfamethoxazole?

Sulfamethoxazole is primarily used to treat bacterial infections such as urinary tract infections, bronchitis, and prostatitis.

What is the mechanism of action of sulfamethoxazole?

Sulfamethoxazole works by inhibiting bacterial folic acid synthesis through its action on the enzyme dihydropteroate synthase (DHPS).

Is sulfamethoxazole used prophylactically?

Yes, sulfamethoxazole, in combination with trimethoprim, is used prophylactically to prevent Pneumocystis pneumonia (PCP) in immunocompromised patients.

What are the common side effects of sulfamethoxazole?

Common side effects include gastrointestinal disturbances (nausea, vomiting) and allergic skin reactions.

What is the forecasted growth rate of the sulfamethoxazole market?

The sulfamethoxazole market is expected to grow at a significant CAGR from 2024 to 2031, driven by increasing demand and the lack of effective alternative treatments.

Sources

  1. ClinicalTrials.gov: Short and Long Term Outcomes of Doxycycline Versus Trimethoprim-Sulfamethoxazole for Skin and Soft Tissue Infections Treatment.
  2. Cognitive Market Research: Sulfamethoxazole Market Report 2024 (Global Edition).
  3. PLOS ONE: A systematic review and meta-analysis on the efficacy and safety of trimethoprim-sulfamethoxazole for preventing Pneumocystis pneumonia in HIV-negative immunocompromised individuals.
  4. Synapse: Sulfamethoxazole - Drug Targets, Indications, Patents.
  5. Market Research Reports Inc.: Sulfamethoxazole - Global Market Share and Ranking, Overall Sales and Demand Forecast 2024-2030.

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