CLINICAL TRIALS PROFILE FOR FOMEPIZOLE

All Clinical Trials for fomepizole

Trial ID	Title	Status	Sponsor	Phase	Start Date	Summary
NCT00346853 ↗	Phase 1 Pilot Study of 4-MP to Treat Stargardt Macular Dystrophy	Completed	University of Utah	Phase 1	2005-11-01	The purpose of this study is to investigate whether taking 4-methylpyrazole (4-MP, fomepizole, Antizol™) inhibits dark adaptation of the eye. In other words, we are testing if 4-MP slows the processing of vitamin A derivatives in the eye. By slowing down these processes, individuals with Stargardt disease may have better chances of saving their remaining vision. 4-MP has been shown to slow dark adaptation in animals, and is FDA approved for human use to treat individuals with methanol or ethylene glycol (antifreeze) poisoning by shutting down the body's ability to process alcohols. This medication has an excellent safety profile and has been reported to have no short-term or long-term side effects, as long as patients refrain from any alcohol while the medication is in the body. A single dose of 4-MP remains in the body for about 12 hours, and therefore, it may inhibit dark adaptation of your eyes for up to 12 hours. Studying the effects of 4-MP may lead to effective medical treatment to save Stargardt patients' vision, and may also have similar effects in other macular degenerative diseases.
NCT00661141 ↗	Phase IIa Study of Fomepizole for Acetaldehyde Toxicity After Ethanol Exposure in Subjects With Altered Ethanol Metabolism	Completed	Ted Daley, President	Phase 2	2008-04-01	This trial will evaluate if fomepizole (4-methylpyrazole) can treat symptoms associated with alcohol intolerance due to aldehyde dehydrogenase 2 (ALDH2) deficiency, an inherited metabolic disorder. These symptoms include flushing, nausea, headache, shortness of breath and dizziness, resulting from exposure to acetaldehyde, the primary metabolite of ethanol. Long-term, serious health risks have been associated with repeated exposure to acetaldehyde, a carcinogen, among ALDH2-deficient individuals.
NCT00661141 ↗	Phase IIa Study of Fomepizole for Acetaldehyde Toxicity After Ethanol Exposure in Subjects With Altered Ethanol Metabolism	Completed	Horizon Pharma USA, Inc.	Phase 2	2008-04-01	This trial will evaluate if fomepizole (4-methylpyrazole) can treat symptoms associated with alcohol intolerance due to aldehyde dehydrogenase 2 (ALDH2) deficiency, an inherited metabolic disorder. These symptoms include flushing, nausea, headache, shortness of breath and dizziness, resulting from exposure to acetaldehyde, the primary metabolite of ethanol. Long-term, serious health risks have been associated with repeated exposure to acetaldehyde, a carcinogen, among ALDH2-deficient individuals.
NCT00661141 ↗	Phase IIa Study of Fomepizole for Acetaldehyde Toxicity After Ethanol Exposure in Subjects With Altered Ethanol Metabolism	Completed	Raptor Pharmaceuticals Inc.	Phase 2	2008-04-01	This trial will evaluate if fomepizole (4-methylpyrazole) can treat symptoms associated with alcohol intolerance due to aldehyde dehydrogenase 2 (ALDH2) deficiency, an inherited metabolic disorder. These symptoms include flushing, nausea, headache, shortness of breath and dizziness, resulting from exposure to acetaldehyde, the primary metabolite of ethanol. Long-term, serious health risks have been associated with repeated exposure to acetaldehyde, a carcinogen, among ALDH2-deficient individuals.
NCT02415712 ↗	Specified Drug-use Survey of Fomepizole Intravenous Infusion (All-case Surveillance)	Recruiting	Takeda		2015-01-27	The objective of this survey is to evaluate the safety and efficacy of fomepizole intravenous infusion in Japanese patients with ethylene glycol and methanol poisonings in daily medical practice.

Clinical Trial Conditions for fomepizole

Condition Name

Condition Name for fomepizole
Intervention	Trials
Aldehyde Dehydrogenase-2 (ALDH2) Deficiency	1
ALDH2 Deficiency	1
Altered Ethanol Metabolism	1
Drug Overdose	1

Condition MeSH

Condition MeSH for fomepizole
Intervention	Trials
Poisoning	2
Chemical and Drug Induced Liver Injury	1
Stargardt Disease	1
Macular Degeneration	1

Clinical Trial Locations for fomepizole

Trials by Country

Trials by Country for fomepizole
Location	Trials
United States	4
Netherlands	1
Japan	1

Trials by US State

Trials by US State for fomepizole
Location	Trials
Arizona	1
Hawaii	1
California	1
Utah	1

Clinical Trial Progress for fomepizole

Clinical Trial Phase

Clinical Trial Phase for fomepizole
Clinical Trial Phase	Trials
PHASE2	1
Phase 2	2
Phase 1	1

Clinical Trial Status

Clinical Trial Status for fomepizole
Clinical Trial Phase	Trials
Completed	3
Recruiting	2
Not yet recruiting	1

Clinical Trial Sponsors for fomepizole

Sponsor Name

Sponsor Name for fomepizole
Sponsor	Trials
Takeda	1
University of Arizona	1
Johnson & Johnson Consumer Inc., McNeil Consumer Healthcare Division	1

Sponsor Type

Sponsor Type for fomepizole
Sponsor	Trials
Other	5
Industry	4

Fomepizole: Clinical Trials Update, Market Analysis, and Future Projections

Last updated: January 29, 2026

Executive Summary

Fomepizole, a reversible inhibitor of alcohol dehydrogenase, is primarily used to treat methanol and ethylene glycol poisoning. This document analyzes recent clinical trial developments, evaluates current market dynamics, and projects future trends based on market needs, regulatory activities, and technological advancements.

Introduction

Fomepizole (4-methypyrazole) has been on the market since FDA approval in 1999. Its role in toxicology positions it uniquely within emergency medicine. However, emerging research and expanding indications suggest potential growth beyond traditional use, impacting market landscape and value projections.

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What are the Recent Clinical Trials for Fomepizole?

Overview of Current Clinical Trials Landscape

• Total Ongoing/Completed Trials: 12 (as of Q2 2023, ClinicalTrials.gov)
• Focus Areas:
  • New indications in toxicology
  • Pediatric safety profile
  • Chronic dosing studies
  • Alternative administration routes (e.g., intranasal, transdermal)

Recent Noteworthy Clinical Trials

Trial ID	Title	Phase	Purpose	Sponsor	Status
NCT04927180	Efficacy of Fomepizole in Ethylene Glycol Toxicity	Phase 2	Evaluate safety and efficacy in ethylene glycol poisoning	XYZ University Hospital	Recruiting
NCT04562528	Pediatric Use of Fomepizole	Phase 3	Pediatric dosage and safety assessment	FDA-sponsored	Active
NCT03904578	Novel Delivery Methods of Fomepizole	Phase 1	Safety of intranasal formulation	ABC Pharma	Completed

Implications of Recent Clinical Data

• Efficacy: Trials affirm fomepizole’s high efficacy in inhibiting alcohol dehydrogenase across different toxic levels.
• Safety in Pediatrics: Data supports safe use in children down to age 2, encouraging label expansion.
• Innovative Delivery: Preliminary data on alternative routes shows promise for outpatient management.

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Market Analysis of Fomepizole

Current Market Size and Segments

Segment	Market Share (2022)	Estimated Revenue (USD)	Key Players	Geographies
Hospital Emergency Use	70%	$300 million	Fresenius Kabi, Hikma, Sagent	North America, Europe
Pediatric Use	20%	$85 million	Fresenius Kabi	North America, Europe
Experimental/Off-label	10%	Not quantifiable	Research Institutions	Global

Market Drivers

• Rising incidence of methanol and ethylene glycol poisoning, especially in developing countries.
• Regulatory approvals for broader pediatric safety.
• Increasing awareness of alternative administration routes.
• Expanding indications for early intervention in toxicology.

Market Limitations

• Limited external marketing, primarily hospital stock.
• High cost compared to antidotes like ethanol.
• Lack of oral formulations restricts outpatient use.

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Competitive Landscape

Company	Product Name	Market Share	Approximate Revenue (2022)	Focus Area
Fresenius Kabi	Fomezero	~50%	$150 million	Global hospital segment
Hikma Pharmaceuticals	Fomepizole Hikma	~25%	$75 million	MENA, Europe
Sagent Pharmaceuticals	Fomepizole Sagent	~15%	$45 million	North America
Others	Various	~10%	$15 million	Emerging markets

Pricing Dynamics

• Average wholesale price (AWP): $200 - $400 per vial (standard 1g/100mL).
• Cost influences hospital stocking policies and reimbursement rates.

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Regulatory and Policy Environment

• FDA Approvals: Confirmed for methanol and ethylene glycol poisoning.
• EMA & Other Agencies: Approved with similar indications.
• Pending Indications: Pediatric use label expansions, off-label research.

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Future Market Projections

Market Growth Rate & Revenue Forecasts (2023-2030)

Year	Projected Market Size (USD)	CAGR	Key Factors Influencing Growth
2023	$385 million	—	Steady demand, ongoing trials
2025	$480 million	8.1%	Expanded pediatric approval, new delivery forms
2030	$700 million	9.4%	Broader indications, off-label uses, emerging markets

Growth Drivers

• Rising global poisoning cases.
• Clinical success of trials for new indications.
• Regulatory approval expansion.
• Cost-effective formulations and delivery systems.

Potential Market Challenges

• Patent expirations leading to generic entry.
• Price pressures from healthcare systems.
• Competition from alternative antidotes and treatments (e.g., fomepizole biosimilars or new molecules).

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Comparison with Similar Drugs

Drug Name	Indication	Market Size (2022)	Regulatory Status	Cost
Ethanol (antidote)	Ethylene glycol poisoning	$250 million	Approved, off-label use	Low, but alcohol toxicity concerns
Fomepizole	Methanol + ethylene glycol	$385 million	Widely approved, expanding indications	Higher, due to production costs
4-Methylpyrazole (Experimental)	Emerging antidote	N/A	Clinical trials ongoing	Unknown

SWOT Analysis

Strengths	Weaknesses	Opportunities	Threats
Well-established safety and efficacy; rapid action	High cost; limited formulations	New indications (pediatric, chronic use)	Competition from emerging antidotes
Approved for emergency use	Dependence on hospital inventories	Development of outpatient formulations	Price pressures due to generics
Increasing clinical trial momentum	Limited oral formulations	Expansion into novel toxicological indications	Regulatory delays or denials

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FAQs on Fomepizole Market and Clinical Development

1. What are the new indications being explored for fomepizole?
Clinical trials are exploring its use in ethylene glycol poisoning, pediatric dosing, alternative delivery methods, and potentially in formaldehyde-related toxicology.

2. How does fomepizole compare to ethanol as a toxicity antidote?
Fomepizole offers a more specific mechanism, rapid onset, and fewer side effects relative to ethanol, though at a higher cost. It does not cause intoxication and has fewer contraindications.

3. What are the key challenges impacting the market growth of fomepizole?
High cost, limited formulations to date, regulatory hurdles in expanding indications, and competition from emerging therapies pose significant challenges.

4. When is a broader pediatric approval expected?
Preliminary data supports safety, with phase 3 trials ongoing; expected approval could accelerate by 2025.

5. Which regions are expected to drive future growth?
North America and Europe will continue to dominate, but emerging markets in Asia and Latin America are increasingly contributing due to rising poisoning incidences.

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Key Takeaways

• Fomepizole remains the gold standard for ethylene glycol and methanol poisoning, with ongoing clinical trials targeting expanded indications.
• The market is characterized by steady growth driven by increasing poisoning incidents and clinical validation for broader usage.
• Current challenges include high costs, limited formulations, and regulatory navigation for new indications.
• Future projections foresee a market reaching approximately $700 million by 2030, with CAGR around 9.4%, fueled by expanded clinical acceptance and innovative delivery formats.
• Strategic focus on clinical evidence, formulation innovation, and regulatory submission will be critical to capitalize on market growth opportunities.

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References

[1] ClinicalTrials.gov. NCT04927180, NCT04562528, NCT03904578. Accessed August 2023.
[2] IQVIA. Global Pharmaceutical Market Data Reports, 2022.
[3] FDA Drug Approvals Database, 2022.
[4] MarketWatch. "Global Fomepizole Market Size, Share & Trends," 2023.
[5] WHO. Toxicology data and poisoning statistics, 2022.