Last Updated: June 24, 2026

CLINICAL TRIALS PROFILE FOR PIOGLITAZONE HYDROCHLORIDE


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All Clinical Trials for PIOGLITAZONE HYDROCHLORIDE

Trial ID Title Status Sponsor Phase Start Date Summary
NCT00013598 ↗ Treatment of Nonalcoholic Steatohepatitis With Pioglitazone Completed National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) Phase 2 2001-03-01 This study will evaluate the effectiveness of pioglitazone, a new diabetes medicine, on decreasing insulin resistance and improving liver disease in patients with nonalcoholic steatohepatitis (NASH). NASH is a chronic liver disease with unknown cause that involves fat accumulation and inflammation in the liver, leading to liver cirrhosis in 10 to 15 percent of patients and significant liver scarring in another 30 percent. Although similar to a condition that affects people who drink excessive amounts of alcohol, NASH occurs in people who drink only minimal or no alcohol. It is most often seen in patients with insulin resistance. Pioglitazone decreases insulin resistance and improves blood lipid (fat) levels, so that it may improve liver disease in NASH. Patients with NASH 18 years of age or older may be eligible for this study. Candidates will be screened with a medical history and physical examination and routine blood tests. They will see a dietitian for counseling on diet and weight reduction, if needed. They will stop taking any medications for liver disease and take a daily multivitamin pill. After 2 months, those eligible for participation will be enrolled in the study. Participants will be admitted to the Clinical Center for 2 to 3 days for a complete medical history, physical examination, blood tests, urinalysis, chest X-ray, electrocardiogram, abdominal ultrasound and a liver biopsy. After the diagnosis of NASH is confirmed, the following procedures will be performed: - Echocardiography - imaging test using sound waves shows the heart structure and function - Resting metabolic rate - measures amount of oxygen (and calories) used to maintain body functions at rest. While lying down, the patient wears a clear plastic hood over the head for 20 minutes while the amount of oxygen used is measured. - Magnetic resonance imaging (MRI) scans - shows the size of the liver and other organs. The patient lies on a table in a metal cylinder that contains a magnetic field (the scanner) for no more than 30 minutes while the organs are imaged. - Dual energy X-ray absorptiometry (DEXA) scan measures whole body composition, including amount of fat. The patient lies under an X-ray scanning machine for about 2 minutes. - Oral glucose tolerance test (OGTT) - measures blood sugar and insulin levels. The patient drinks a very sweet drink containing glucose (sugar), after which blood samples are collected at various intervals during the 3-hour test. The blood is drawn through a catheter (thin plastic tube) placed in the arm before the test begins. - Intravenous glucose tolerance test (IVGTT) - determines how the tissues respond to insulin and glucose. Glucose is injected into a vein, followed by a short infusion of insulin. Blood samples are collected through a catheter at various intervals during the 3-hour test. When the above procedures are completed, patients start taking pioglitazone by mouth once a day for 48 weeks, keeping track of the medication and any side effects. They will be seen at the clinic every 2 weeks for the first month and then every 4 weeks for the rest of the treatment period. The visits will include an interview and examination by a physician and blood draw for laboratory tests. Female patients will have a pregnancy test at each clinic visit. At the end of the treatment period patients will be admitted to the Clinical Center for a repeat medical evaluation that will include the procedures described above.
NCT00015626 ↗ A Clinical Trial to Prevent the Complications of Insulin Resistance (Including Type-2 Diabetes) Completed National Center for Research Resources (NCRR) Phase 2 1969-12-31 The goal of this study is to aggressively treat insulin resistance and its clinical manifestations when they first appear in childhood, and to prevent the subsequent progression towards impaired glucose tolerance and type-2 diabetes. In the process of this clinical trial, we will learn more about the early manifestations of insulin resistance, its treatment, and its relationship to obesity and type-2 diabetes through parallel in-vivo and in-vitro studies.
NCT00062764 ↗ Treating Nonalcoholic Steatohepatitis With Pioglitazone Completed National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) Phase 2 2003-06-01 Nonalcoholic steatohepatitis (NASH) is a common liver disease that resembles alcoholic hepatitis but occurs in persons who drink little or no alcohol. The etiology of NASH is unclear, but it is commonly associated with diabetes, obesity, and insulin resistance. Several pilot studies, including a study of pioglitazone at the NIH Clinical Center (01-DK-0130), have shown that the insulin-sensitizing thiazolidinediones lead to decreases in serum alanine aminotransferase (ALT) levels and improved liver histology. Once therapy is stopped, however, ALT levels rapidly return to pre-treatment values. Inaddition we are currently enrolling patients with NASH in a pilot study of metformin therapy for 48-weeks, however our results in 3 patients thus far have not been very encouraging. In the current study, patients who have completed the pilot study of pioglitazone and have been off therapy for 48 weeks will be offered re-treatment for 3 years. We also propose to treat patients who have not had a satisfactory response to metformin with pioglitazone for the same duration. After a repeat medical and metabolic evaluation and liver biopsy, patients with moderate-to-severe NASH (activity score greater than or equal to 4) will restart pioglitazone at a dose of 15 mg daily. If after 48 weeks, ALT levels are not normal or improved to the degree identified during the pilot study, the dose will be increased to 30 mg daily at the end of 3 years, all patients will undergo repeat medical and metabolic evaluation and liver biopsy. The primary end point will be improvement in liver histology. Secondary end points will be improvements in insulin sensitivity, reduction in visceral fat, liver volume, and liver biochemistry. The aim of this study is to evaluate whether long-term pioglitazone therapy can safely achieve and maintain biochemical and histological improvements in NASH. ...
NCT00063232 ↗ Treating Nonalcoholic Steatohepatitis (NASH) With Metformin Completed National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) Phase 2 2003-06-01 Nonalcoholic Steatohepatitis (NASH) is associated with progressive liver disease, fibrosis, and cirrhosis. Although the cause of NASH is unknown, it is often associated with obesity, type 2 diabetes, and insulin resistance. At present, there are no approved treatments for NASH patients, but an experimental approach has focused on improving their insulin sensitivity. Metformin is one of the most commonly used medications for the treatment of diabetes. The purpose of this study is to determine whether the medical problems of NASH patients, specifically liver damage, improves when their insulin sensitivity is enhanced with metformin. The study will last 3 to 5 years and will enroll up to 30 patients. Participants will undergo a complete medical examination, a series of lab tests, and a liver biopsy. They will then start taking a single 500-mg tablet of metformin once a day for 2 weeks, then the same dosage twice a day for 2 more weeks, if they tolerate the first dosage. The dosage will increase to 1,000 mg twice a day for the remaining 44 weeks of the study. After 1 year, participants will undergo a repeat medical examination and liver biopsy.
NCT00063622 ↗ Pioglitazone vs Vitamin E vs Placebo for Treatment of Non-Diabetic Patients With Nonalcoholic Steatohepatitis (PIVENS) Completed National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) Phase 3 2005-01-01 The purpose of this study is to determine if therapy with pioglitazone or vitamin E will lead to an improvement in liver histology in non-diabetic adult patients with non-alcoholic steatohepatitis (NASH).
NCT00086502 ↗ Pioglitazone Add-on Study in Patients With Type 2 Diabetes Mellitus Completed Merck Sharp & Dohme Corp. Phase 3 2004-06-01 The purpose of this study is to determine the safety and efficacy of an investigational drug in patients with type 2 diabetes mellitus.
>Trial ID >Title >Status >Phase >Start Date >Summary

Clinical Trial Conditions for PIOGLITAZONE HYDROCHLORIDE

Condition Name

Condition Name for PIOGLITAZONE HYDROCHLORIDE
Intervention Trials
Type 2 Diabetes Mellitus 66
Diabetes Mellitus, Type 2 65
Type 2 Diabetes 53
Diabetes Mellitus 38
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Condition MeSH

Condition MeSH for PIOGLITAZONE HYDROCHLORIDE
Intervention Trials
Diabetes Mellitus 228
Diabetes Mellitus, Type 2 214
Insulin Resistance 40
Fatty Liver 40
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Clinical Trial Locations for PIOGLITAZONE HYDROCHLORIDE

Trials by Country

Trials by Country for PIOGLITAZONE HYDROCHLORIDE
Location Trials
Germany 123
Canada 110
India 85
Mexico 84
United Kingdom 68
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Trials by US State

Trials by US State for PIOGLITAZONE HYDROCHLORIDE
Location Trials
Texas 102
California 76
Ohio 67
Florida 66
New York 61
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Clinical Trial Progress for PIOGLITAZONE HYDROCHLORIDE

Clinical Trial Phase

Clinical Trial Phase for PIOGLITAZONE HYDROCHLORIDE
Clinical Trial Phase Trials
PHASE4 10
PHASE3 6
PHASE2 5
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Clinical Trial Status

Clinical Trial Status for PIOGLITAZONE HYDROCHLORIDE
Clinical Trial Phase Trials
Completed 338
Terminated 53
Recruiting 51
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Clinical Trial Sponsors for PIOGLITAZONE HYDROCHLORIDE

Sponsor Name

Sponsor Name for PIOGLITAZONE HYDROCHLORIDE
Sponsor Trials
Takeda 60
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) 25
Merck Sharp & Dohme Corp. 21
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Sponsor Type

Sponsor Type for PIOGLITAZONE HYDROCHLORIDE
Sponsor Trials
Other 430
Industry 265
NIH 69
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Pioglitazone Hydrochloride Clinical Trials Update, Market Analysis, and Expiration-Proof Projection

Last updated: May 20, 2026

Pioglitazone hydrochloride is an oral thiazolidinedione (TZD) for type 2 diabetes. Clinical-development activity is concentrated in incremental formulation, combination products, and mechanistic/endpoint trials, not new pivotal monotherapies. The global market is mature, generic-dominated, and exposed to ongoing competitive pressure from incretin-based therapies, SGLT2 inhibitors, and newer agents with favorable weight and cardiorenal profiles. Forecasts for 2026-2035 center on modest volume stability with pricing pressure, offset by fixed-dose combinations and label-segment persistence (notably insulin-treated and earlier-line use in some regions).


What is the current clinical trials landscape for pioglitazone hydrochloride?

Snapshot: Trial activity is ongoing but largely post-approval and label-adjacent, with emphasis on real-world outcomes, safety optimization, and combination regimens. New “pioglitazone hydrochloride-only” registrational trials are limited because the active is off patent in most jurisdictions.

Where are trials concentrated by study type?

  1. Cardiometabolic outcomes and safety follow-up

    • Emphasis on heart failure risk monitoring, edema incidence, and fracture/sarcopenia signals.
    • Use of real-world evidence designs and post-marketing observational cohorts.
  2. Combination therapy trials

    • Pioglitazone paired with metformin and/or agents targeting insulin resistance and glycemic variability.
    • Trials increasingly evaluate combination adherence, tolerability, and glycemic endpoints in routine practice populations.
  3. Dosing and adherence optimization

    • Lower starting-dose strategies, titration schedules, and adherence support interventions.
    • Studies that correlate regimen design with A1c trajectories and discontinuation reasons.
  4. Biomarker and mechanistic sub-studies

    • Focus on insulin sensitivity markers, adipose inflammation, and lipid profile effects.

What trial endpoints show up most often?

  • Glycemic control: change from baseline HbA1c, fasting plasma glucose, and time-in-range metrics where available.
  • Insulin sensitivity proxies: HOMA-IR and related measures in mechanistic arms.
  • Safety endpoints: edema, weight gain, heart failure hospitalization, fractures, and bone density in long-duration cohorts.
  • Cardiovascular/renal composites: varies by trial sponsor and era of protocol design.

How many pioglitazone hydrochloride trials are ongoing and what phases are they in?

Snapshot: Active efforts are dominated by Phase IV and observational/registry work, with fewer true Phase II/III pilots. The practical reason is market maturity: most sponsors focus on incremental evidence, combination value, or safety surveillance rather than de novo drug approvals.

What makes pioglitazone “trial-light” versus newer diabetes drugs?

  • Patent estate expiration and generic competition reduce incentive for large registrational programs.
  • Label expansion is constrained by established clinical positioning of TZDs and their known risk-benefit profile.
  • Pivotal trial standards in diabetes now favor outcome-centric endpoints aligned to SGLT2 and GLP-1 trial templates, which pioglitazone programs rarely replicate at scale.

What trial designs dominate?

  • Real-world cohorts (claims/EHR), pragmatic RCTs for adherence and combination protocols, and substudies assessing adverse event risk stratification.

What is the FDA regulatory status of pioglitazone hydrochloride and are there ongoing regulatory actions?

Snapshot: Pioglitazone is an established FDA-approved drug in the United States, with generic entries largely controlling market access. Ongoing regulatory activity tends to involve generic labeling updates, safety communications, and formulation/ANDA amendments rather than new NME approvals.

What is the Orange Book status of pioglitazone?

Orange Book posture: The active ingredient is widely available as generics under multiple ANDAs, with market authorization held by several branded and generic manufacturers historically, but exclusivity is not the main limiter for new entry.

What regulatory drivers matter for near-term competition?

  • ANDA labeling and bioequivalence updates
  • Safety labeling changes tied to ongoing post-marketing pharmacovigilance
  • Combination product labeling where fixed-dose combinations are used as competitive substitutes for monotherapy

What patents protect pioglitazone hydrochloride in key jurisdictions?

Snapshot: Protection is largely historic. In most jurisdictions, composition-of-matter coverage for pioglitazone is not a near-term entry barrier; competitive access is driven by ANDA generic permissibility and residual method/formulation claims, where any remain for specific line extensions.

How does patent coverage typically break down for pioglitazone?

  1. Composition-of-matter (largely expired for the active)
  2. Salt form and polymorph claims
  3. Formulation patents (coating, excipients, controlled release where applicable)
  4. Method-of-use patents
    • Specific subpopulations, dosing schedules, or combinations
  5. Manufacturing process patents
    • Impurities, crystallization steps, and scale-up processes

What matters commercially if composition patents are expired?

  • Formulation and method-of-use claims still can affect entry in narrow scenarios, especially when a branded “new formulation” or “combination” is pursued.
  • The core active is usually available, so barriers are targeted, not absolute.

When does pioglitazone lose exclusivity and what is the generic entry risk?

Snapshot: For monotherapy pioglitazone, exclusivity risk is not the main constraint because generic entry is already widespread. For any specific branded formulation or combination, residual protections (if any) can affect entry timing locally.

What generic entry scenarios exist in a mature market?

  • Unchallenged generic launches already dominate for monotherapy.
  • Design-around approaches apply to formulation and process features.
  • Paragraph IV challenges are less relevant where the Orange Book has no material unexpired barriers for the same labeled product configuration.

What still can delay generic availability?

  • If a particular supplier owns still-valid formulation or dosing patents for an approved dosage form, generic development can require design-around or licensing.

What formulation patents protect pioglitazone hydrochloride and its dosage forms?

Snapshot: Patent protection, when present, tends to be tied to specific product attributes rather than the active itself. The practical effect is product-by-product rather than molecule-wide.

Which formulation angles are most commonly patented for oral solids?

  • Tablet excipient systems
  • Film coating and dissolution profiles
  • Manufacturing granulation parameters affecting impurities and dissolution
  • Stability and shelf-life enhancements

How do formulation patents affect market access?

  • They can slow or block direct AB-rated generic equivalents for a specific dosage form if claims are enforceable and infringement is clear.
  • Most generic entrants still reach the market, but not necessarily as a direct substitute in every strength and package configuration.

What method-of-use patents exist for pioglitazone and do they impact prescribing?

Snapshot: Method-of-use protection, where active, can focus on a labeled population stratification or combination strategy. Clinically, it typically does not change standard-of-care but can influence product availability.

How would method-of-use patents affect generics?

  • Generics can often sell the active ingredient product but may be constrained on promotional labeling or specific claimed indications if challenged in court.
  • Practical impact is greatest when a branded product uses a distinct method claim tied tightly to an approved label or a specific regimen.

What pioglitazone patent litigation affects generic entry in the US?

Snapshot: Litigation for pioglitazone is historically present but no longer a primary driver of access in a fully generic environment. Any current litigation would be product-specific (combination, formulation, or residual method claims).

What litigation pattern is typical in mature TZDs?

  • Challenges focus on whether unexpired Orange Book-listed patents remain enforceable against a generic’s proposed labeling and manufacturing.
  • Courts usually resolve on claim construction and infringement rather than broad molecule-level validity.

How does pioglitazone market performance compare with GLP-1 and SGLT2 competitors?

Snapshot: Pioglitazone faces sustained share pressure from incretin-based therapy uptake and SGLT2 inhibitor expansion due to weight and cardiovascular/renal benefit profiles.

Mechanism-based competitive positioning

  • Pioglitazone: improves insulin sensitivity; side effects include weight gain and edema risk.
  • GLP-1 receptor agonists / dual agonists: weight reduction and strong glycemic control; cardiovascular outcomes in established members.
  • SGLT2 inhibitors: renal and heart failure benefits in relevant populations.

What keeps pioglitazone “sticky” in the market?

  • Cost structure in many regions where generics are dominant.
  • Persistent clinician use as add-on in patients requiring insulin sensitization.
  • Established safety monitoring protocols and long clinical familiarity.

What is the current and projected global market for pioglitazone?

Snapshot: The market is mature and largely driven by generic volumes. Growth is expected to be modest globally, with regional variation influenced by reimbursement structures and diabetes prevalence trends.

Market drivers

  • Rising type 2 diabetes incidence and treatment initiation volumes
  • Generic penetration and affordability
  • Continued use in combination regimens
  • Formulary positioning in health systems with cost-containment mandates

Market headwinds

  • Shifting prescriber and guideline preference toward GLP-1 and SGLT2 agents
  • Safety concerns that increase monitoring burden
  • Competition from other low-cost glucose-lowering agents (DPP-4 inhibitors, sulfonylureas)

What are the 2026 to 2035 revenue and volume projections for pioglitazone hydrochloride?

Snapshot: Over 2026-2035, value growth is constrained by price erosion, while volume is stabilized by generic availability and persistent line-of-therapy use in some markets.

Projection shape (directionally)

  • Volume: slight expansion broadly tied to diabetes prevalence.
  • Unit prices: continued decline or plateau depending on regional regulatory and tender mechanisms.
  • Net revenue: low single-digit growth or flat in many markets; higher growth possible in under-penetrated regions if adherence increases.

Scenario framing used for planning

  • Base case: stable-to-slightly growing global volumes; ongoing price compression.
  • Downside case: faster substitution to GLP-1/SGLT2 in formularies and guideline adherence shifts.
  • Upside case: broader use in cost-constrained health systems and sustained combination adoption.

(No specific numeric forecasts can be produced without market sizing inputs and trial-by-trial regulatory status data for each region and dosage strength.)


Which companies are active in pioglitazone supply and combination portfolios?

Snapshot: Supply is dominated by generic manufacturers, with branded producers historically present. Combination presence is often via fixed-dose coformulations where available locally.

Commercial reality

  • Market share is determined by tenders, supply reliability, and pricing rather than differentiation.

Where “active development” still matters

  • Fixed-dose combinations and authorized generics where label and dosing convenience can win formulary placement.

What competitive landscape is emerging for pioglitazone hydrochloride?

Snapshot: Competition is not about novel pioglitazone chemistry but about:

  • cheaper generics versus each other
  • switching to mechanism alternatives
  • product positioning within formularies and reimbursement criteria

Key competitive dimensions

  1. Price and tender outcomes
  2. Package size availability and logistics
  3. Formulary restrictions tied to safety monitoring
  4. Combination product access

What generic entry risks exist for pioglitazone hydrochloride in combination products?

Snapshot: Risk is higher for any specific fixed-dose combination with unique formulation, method, or remaining Orange Book claims. For pure pioglitazone monotherapy, generic access is already established.

Where design-around matters

  • Different dissolution profiles, excipient systems, and manufacturing steps
  • Any residual patent protection in combination dosage forms
  • Labeling and route of administration constraints, if claimed

Key Takeaways

  • Pioglitazone hydrochloride is a mature, generic-dominated diabetes drug with clinical trial activity skewed toward Phase IV, combination regimens, and safety/real-world outcomes.
  • Market prospects through 2035 are shaped by price compression and competitive displacement by GLP-1 and SGLT2 therapies, with volume largely anchored to diabetes prevalence and cost-driven prescribing.
  • Patent and exclusivity constraints are not a major gating factor for monotherapy access in most geographies; any timing impacts are more likely tied to specific formulation or combination products.
  • Commercial strategy emphasis should be on tender dynamics, combination portfolio opportunities, and risk-managed safety labeling and monitoring execution.

FAQs

  1. Are there any new pivotal Phase III trials for pioglitazone hydrochloride?
    Trial activity is largely post-approval and label-adjacent, not driven by new registrational programs.

  2. Does pioglitazone have meaningful ongoing exclusivity risk in the US?
    For monotherapy, exclusivity is typically not the gating factor because generic access is already widespread; risk is product-specific.

  3. What safety signals most influence pioglitazone monitoring in clinical studies?
    Weight gain, edema, heart failure hospitalization risk, and fracture-related outcomes.

  4. How does pioglitazone’s market outlook differ by region?
    Regions with stronger cost containment and generic tendering can sustain volume longer; regions with faster incretin uptake see faster displacement.

  5. Can fixed-dose pioglitazone combinations create new IP or entry barriers?
    Yes, residual formulation and method-of-use claims can exist for specific combination dosage forms, affecting direct AB-equivalent entry.


References

  1. FDA. Orange Book: Approved Drug Products with Therapeutic Equivalence Evaluations. (Accessed 2026-05-20).
  2. ClinicalTrials.gov. Pioglitazone hydrochloride studies (Accessed 2026-05-20).
  3. FDA. Drug Safety Communications and Labeling Updates for pioglitazone-containing products. (Accessed 2026-05-20).

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