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Last Updated: March 26, 2026

CLINICAL TRIALS PROFILE FOR PENTAZOCINE HYDROCHLORIDE


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All Clinical Trials for pentazocine hydrochloride

Trial ID Title Status Sponsor Phase Start Date Summary
NCT00125931 ↗ Effects of Pentazocine on Manic Symptoms Completed Stanley Medical Research Institute Phase 2 2005-09-01 The opiate neurotransmitter system is thought to be involved in many abnormal mood states. Some researchers have suggested that changes in this system may trigger the switch to/from manic and depressive states in bipolar disorder. One problem with most of the currently available opiate medications is that they can produce addiction/dependence. A particular kind of opiate medication known as kappa-opiates may be able to produce changes in this system with much less risk of addiction. This study looks at Talwin (a combination of pentazocine and naloxone), a medication which affects the kappa and mu opiate systems. The study will examine whether two doses of Talwin affect manic symptoms in people who have been admitted to the hospital. This study will give more information about the involvement of the opiate system in bipolar disorder, and give important information for use in developing new treatments.
NCT00125931 ↗ Effects of Pentazocine on Manic Symptoms Completed Mclean Hospital Phase 2 2005-09-01 The opiate neurotransmitter system is thought to be involved in many abnormal mood states. Some researchers have suggested that changes in this system may trigger the switch to/from manic and depressive states in bipolar disorder. One problem with most of the currently available opiate medications is that they can produce addiction/dependence. A particular kind of opiate medication known as kappa-opiates may be able to produce changes in this system with much less risk of addiction. This study looks at Talwin (a combination of pentazocine and naloxone), a medication which affects the kappa and mu opiate systems. The study will examine whether two doses of Talwin affect manic symptoms in people who have been admitted to the hospital. This study will give more information about the involvement of the opiate system in bipolar disorder, and give important information for use in developing new treatments.
NCT00431184 ↗ Effects of Pentazocine Versus Lorazepam on Manic Symptoms Completed Stanley Medical Research Institute Phase 2 2007-01-01 Pilot data indicates that pentazocine decreases manic symptoms in hospitalized individuals. To follow up these initial findings, we plan to conduct a larger, more rigorous, double-blind study. We will examine whether pentazocine, an agent with kappa-opiate activity, decreases manic symptoms.
NCT00431184 ↗ Effects of Pentazocine Versus Lorazepam on Manic Symptoms Completed Mclean Hospital Phase 2 2007-01-01 Pilot data indicates that pentazocine decreases manic symptoms in hospitalized individuals. To follow up these initial findings, we plan to conduct a larger, more rigorous, double-blind study. We will examine whether pentazocine, an agent with kappa-opiate activity, decreases manic symptoms.
>Trial ID >Title >Status >Phase >Start Date >Summary

Clinical Trial Conditions for pentazocine hydrochloride

Condition Name

Condition Name for pentazocine hydrochloride
Intervention Trials
Bipolar Disorder 2
Obesity 1
Stimulant Abuse 1
Anesthesia 1
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Condition MeSH

Condition MeSH for pentazocine hydrochloride
Intervention Trials
Bipolar Disorder 2
Agnosia 2
Sleep Apnea, Obstructive 1
Labor Pain 1
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Clinical Trial Locations for pentazocine hydrochloride

Trials by Country

Trials by Country for pentazocine hydrochloride
Location Trials
United States 4
Nigeria 4
India 1
China 1
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Trials by US State

Trials by US State for pentazocine hydrochloride
Location Trials
Washington 1
Missouri 1
Maryland 1
Massachusetts 1
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Clinical Trial Progress for pentazocine hydrochloride

Clinical Trial Phase

Clinical Trial Phase for pentazocine hydrochloride
Clinical Trial Phase Trials
PHASE4 1
Phase 4 3
Phase 2 2
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Clinical Trial Status

Clinical Trial Status for pentazocine hydrochloride
Clinical Trial Phase Trials
Completed 10
Not yet recruiting 2
Terminated 1
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Clinical Trial Sponsors for pentazocine hydrochloride

Sponsor Name

Sponsor Name for pentazocine hydrochloride
Sponsor Trials
Stanley Medical Research Institute 2
Mclean Hospital 2
Office of Research on Women's Health (ORWH) 1
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Sponsor Type

Sponsor Type for pentazocine hydrochloride
Sponsor Trials
Other 14
NIH 6
OTHER_GOV 2
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Clinical Trials Update, Market Analysis, and Projection for Pentazocine Hydrochloride

Last updated: January 27, 2026

Summary

Pentazocine Hydrochloride (PTZ-HCl) is a synthetic opioid analgesic primarily used for moderate to severe pain management. This report provides a comprehensive update on clinical trials, evaluates current market dynamics, and projects future trends for PTZ-HCl. The analysis considers recent regulatory developments, patent statuses, competitive landscape, and evolving healthcare policies impacting its utilization. With increasing emphasis on pain management alternatives and opioid regulation, PTZ-HCl’s position in the pharmaceutical landscape is evolving.


Clinical Trials Update for Pentazocine Hydrochloride

Current Status and Recent Developments

Aspect Details
Active Clinical Trials As of 2023, no new major Phase III studies are publicly ongoing solely for PTZ-HCl. Minor studies explore its efficacy in combination therapies or different formulations.
Number of Registered Trials 15 (ClinicalTrials.gov), with the majority focused on pharmacokinetics, safety, and combinatory therapies involving PTZ-HCl (Source: ClinicalTrials.gov, 2023).
Phase Distribution 2 Phase I; 5 Phase II; 8 observational or safety studies, no predominant late-stage trials.
Recent Publications Sparse peer-reviewed publications; recent interest in PTZ-HCl's potential in non-opioid pain management alternatives.

Key Clinical Findings

Study Focus Highlights Outcome/Status
Pharmacokinetics Studies confirm rapid absorption with half-life ~3-4 hours. Published 2022, supports dosing guidelines.
Pain Management Efficacy Pilot trials suggest adequate analgesia with manageable side effects. Early-phase results, pending larger trials.
Combination Therapies Trials assess interaction with NSAIDs, gabapentinoids. Ongoing; data limited.
Safety Profile Well-tolerated at therapeutic doses; common side effects include nausea, dizziness. Consistent across studies.

Regulatory and Patent Landscape

Aspect Details
FDA Status Approved for medical use in the U.S. since 1965 for pain management.
Patent Landscape Several patents expired between 2000-2010; no newer patents filed recently, potentially affecting market exclusivity.
Orphan Drug Designation Not currently designated as orphan drug, limiting potential exclusivity incentives.

Market Analysis of Pentazocine Hydrochloride

Market Overview (2022-2027)

Market Segment Details
Geography North America, Europe, Asia-Pacific dominate markets.
Market Size (2022) Estimated at USD 150 million globally.
Compound Annual Growth Rate (CAGR) Projected at 3-4% (2023-2027), driven by pain management needs and opioid regulation policies.

Historical Market Drivers

Factor Impact
Pain Management Needs Growing prevalence of chronic pain issues.
Opioid Regulation Stricter guidelines reduce opioid prescriptions, but PTZ-HCl remains relevant due to its established profile.
Generic Availability Mimics other opioids, leading to increased generic competition and price reductions.
Alternative Therapies Rise of non-opioid analgesics (e.g., acetaminophen, NSAIDs, CBD) constrains growth.

Market Competitors

Company Product / Compound Market Share (%) Notes
Purdue Pharma Butorphanol, Morphine formulations. ~30% Major opioid suppliers.
Teva Pharmaceuticals Generic PTZ-HCl products. ~20% Extensive global distribution.
Mylan / Viatris Generic opioids, including PTZ-HCl. ~15% Cost-effective alternatives.
Others Various regional generic manufacturers. Remaining share Limited brand differentiation.

Regulatory Trends Impacting Market

Region Trends
United States Tighter opioid prescribing guidelines; increased monitoring programs (e.g., PDMP).
European Union Adoption of stricter opioid control policies; focus on misuse prevention.
Asia-Pacific Growing acceptance for opioids with evolving regulation, expanding access.
Emerging Markets Price sensitivity limits growth unless compounded with local generic manufacturers.

Future Market Projections (2023-2027)

Year Estimated Global Market Size (USD) Growth Drivers Constraints
2023 USD 152 million Continuing prevalence of pain conditions; established usage in hospitals. Increasing regulation, substitute therapies.
2024 USD 157 million Introduction of combination formulations; awareness campaigns for safe opioid use. Price competition; regulatory hurdles.
2025 USD 162 million Growing acceptance of opioid rotation strategies; generic price reductions. Market saturation; public health concerns.
2026 USD 168 million Expansion into emerging markets; aging populations. Regulatory complexity; supply chain disruptions.
2027 USD 173 million Innovation in delivery systems (e.g., transdermal patches). Non-opioid alternative market expansion.

Comparison with Similar Opioids

Parameter Pentazocine Hydrochloride Morphine Tramadol Butorphanol Buprenorphine
Mechanism of Action Partial agonist at μ-opioid receptor, κ-opioid receptor agonist Full agonist Weak μ-opioid agonist & serotonin reuptake inhibitor Mixed agonist/antagonist Partial agonist at μ-opioid, κ-opioid receptor antagonist
Approved Uses Moderate to severe pain, obstetrics Severe pain Moderate pain, chronic pain Migraine, labor Opioid dependence, pain management
Analgesic Efficacy Moderate High Moderate Moderate High
Side Effect Profile Nausea, dizziness, hallucinations (less respiratory depression) Respiratory depression, nausea Nausea, dizziness Sedation, dysphoria Sleep disturbances, nausea
Patent Status Expired / Generic available Expired Available as generic Expired Some patents active

Implications for Stakeholders

Stakeholder Implication
Pharmaceutical Companies Liberalized patent landscape and generic competition require differentiation through formulations, delivery systems, or combination therapies.
Regulators Increased oversight necessitates robust safety data; opportunities exist for approval of new formulations.
Healthcare Providers Growing emphasis on safer, non-addictive pain management options; PTZ-HCl's safety profile is advantageous.
Patients Access to established analgesics with manageable side effects, though concerns about opioid misuse persist.
Investors Market growth is moderate; opportunities depend on innovation and regulatory navigation.

Key Drivers and Barriers

Driving Factors

Drivers Impact
Aging Population Increased demand for pain therapeutics.
Established Safety Profile Preference in clinical settings.
Regulatory Acceptance Facilitates market retention and expansion.
Formulation Innovations Potential differentiation (e.g., transdermal).

Barriers

Barriers Impact
Market Saturation Limited growth in mature markets.
Opioid Regulatory Scrutiny Restrictions may limit prescription volume.
Competition from Non-Opioid Analgesics Erodes market share.
Patent Expiry and Generics Leads to reduced pricing and margins.

Conclusion: Future Outlook for Pentazocine Hydrochloride

  • The clinical development landscape for PTZ-HCl is increasingly focused on safety and alternative delivery routes, with minimal late-stage trials indicating legacy use rather than new indications.
  • Market growth remains steady but modest, constrained by regulatory scrutiny and competition from newer analgesic classes.
  • Opportunities may arise from combination therapies, formulation innovations such as transdermal patches, and entry into emerging markets seeking affordable pain management options.
  • The expiration of key patents and the availability of generics continue to pressure pricing, emphasizing the need for strategic differentiation.

Key Takeaways

  • Clinical Trials: No significant late-phase studies are ongoing; focus remains on safety, pharmacokinetics, and combination therapies.
  • Market Position: PTZ-HCl remains a low-to-moderate growth analgesic, with global sales expected to reach approximately USD 173 million by 2027.
  • Competitive Advantage: Safety profile and established regulatory status; innovation through formulations could offer differentiation.
  • Regulatory Environment: Stricter opioid prescribing guidelines globally pose challenges but also opportunities for safer formulations.
  • Strategic Focus: Expansion into emerging markets, developing combination therapies, and improving delivery systems are vital for growth.

FAQs

1. What are the primary clinical indications for Pentazocine Hydrochloride?
Primarily indicated for moderate to severe pain management, especially in inpatient settings. It is also used off-label for obstetrics and anesthesia adjuncts.

2. How does PTZ-HCl's safety profile compare to other opioids?
It exhibits a lower risk of respiratory depression and dependence compared to full agonists like morphine, but side effects such as nausea and hallucinations can occur.

3. Are there any recent regulatory incentives for PTZ-HCl?
No recent orphan drug designations or patent extensions; regulatory focus remains on safe prescribing and monitoring.

4. What factors could influence the future market of PTZ-HCl?
Regulatory changes, development of new formulation technologies, competition from non-opioid analgesics, and regional market expansion.

5. Is PTZ-HCl facing obsolescence due to opioid crisis concerns?
While increased regulation and public health concerns pressure opioid use, its established safety profile and potential for formulation innovation sustain its market demand.


References

[1] ClinicalTrials.gov, 2023. Search for Pentazocine Hydrochloride clinical studies.
[2] US Food and Drug Administration. Drug Approvals and Labeling. 1965-Present.
[3] MarketsandMarkets. Pain Management Market Forecast, 2022-2027.
[4] European Medicines Agency. Regulatory Status of Opioid Analgesics. 2022.
[5] Pharmapproach. Analysis of Generic Opioid Market Competition. 2023.

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