CLINICAL TRIALS PROFILE FOR ZEGERID

505(b)(2) Clinical Trials for Zegerid

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
OTC	NCT01077076 ↗	Pharmacodynamic Study Comparing the Effects of Two Different Forms of Omeprazole (P07812) (COMPLETED)	Completed	Bayer	Phase 3	2008-12-01	This randomized, crossover study is to evaluate the early effectiveness, defined as effect on intragastric pH during the first 4 hours after dosing, of Zegerid, Prilosec over-the-counter (OTC) Tablets, and placebo on the 4th day of treatment to inhibit acid secretion. Additional purposes are to: 1. provide pharmacodynamic evidence comparing 24-hr inhibition of acid secretion on the 1st, 4th, and 11th days of dosing with each of the indicated treatments; 2. compare Zegerid and Prilosec OTC for achieving their steady-state effects for controlling 24-hr gastric acidity at steady-state on the 4th and 11th day of dosing. 3. evaluate early effectiveness, defined as effect on intragastric pH during the first 4 hours after administration, of Zegerid, Prilosec OTC Tablets, and placebo on acid inhibition at steady-state when administered on the 11th day of dosing.

All Clinical Trials for Zegerid

Trial ID	Title	Status	Sponsor	Phase	Start Date	Summary
NCT00557349 ↗	Ulcer Prevention Study in Post Gastric Bypass Patients	Completed	University of Missouri-Columbia	Phase 4	2006-11-01	This research is to determine which medication, Zegerid (Omeprazole/Sodium Bicarbonate) or Pepcid AC (Famotidine), works best at reducing the chance that a patient will get an ulcer after gastric bypass surgery.
NCT00674115 ↗	A Pharmacodynamic Study Comparing Zegerid® and Prilosec OTC® (CL2007-17 )(P07813)(COMPLETED)	Completed	Bausch Health Americas, Inc.	Phase 3	2008-04-01	Open-label randomized crossover design studies. 60 participants will be evaluated on Day 1 to compare effects on stomach acid; 30 participants will continue treatment for 7 days and will have repeat evaluations at Day 7. The other 30 participants will receive a single administration of sodium bicarbonate.
NCT00674115 ↗	A Pharmacodynamic Study Comparing Zegerid® and Prilosec OTC® (CL2007-17 )(P07813)(COMPLETED)	Completed	Valeant Pharmaceuticals International, Inc.	Phase 3	2008-04-01	Open-label randomized crossover design studies. 60 participants will be evaluated on Day 1 to compare effects on stomach acid; 30 participants will continue treatment for 7 days and will have repeat evaluations at Day 7. The other 30 participants will receive a single administration of sodium bicarbonate.
NCT00674115 ↗	A Pharmacodynamic Study Comparing Zegerid® and Prilosec OTC® (CL2007-17 )(P07813)(COMPLETED)	Completed	Bayer	Phase 3	2008-04-01	Open-label randomized crossover design studies. 60 participants will be evaluated on Day 1 to compare effects on stomach acid; 30 participants will continue treatment for 7 days and will have repeat evaluations at Day 7. The other 30 participants will receive a single administration of sodium bicarbonate.
NCT00693225 ↗	Impact of Timing on the Efficacy of Zegerid 40 mg in Healing Reflux Esophagitis: A Pilot Study	Completed	Bausch Health Americas, Inc.	Phase 4	2008-01-01	The purpose of this study was to determine the effect of morning versus bedtime administration of omeprazole/sodium bicarbonate (Zegerid) on endoscopic healing for patients with moderate or severe reflux esophagitis. Our hypothesis was that bedtime administration of Zegerid would be superior in healing esophagitis compared to morning administration prior to a meal.
NCT00693225 ↗	Impact of Timing on the Efficacy of Zegerid 40 mg in Healing Reflux Esophagitis: A Pilot Study	Completed	Valeant Pharmaceuticals International, Inc.	Phase 4	2008-01-01	The purpose of this study was to determine the effect of morning versus bedtime administration of omeprazole/sodium bicarbonate (Zegerid) on endoscopic healing for patients with moderate or severe reflux esophagitis. Our hypothesis was that bedtime administration of Zegerid would be superior in healing esophagitis compared to morning administration prior to a meal.

Clinical Trial Conditions for Zegerid

Condition Name

Condition Name for Zegerid
Intervention	Trials
Human Experimentation	3
Gastric Acid	2
Gastroesophageal Reflux	2
Healthy Volunteers	1

Condition MeSH

Condition MeSH for Zegerid
Intervention	Trials
Gastroesophageal Reflux	3
Esophagitis, Peptic	2
Heartburn	2
Esophagitis	1

Clinical Trial Locations for Zegerid

Trials by Country

Trials by Country for Zegerid
Location	Trials
United States	14
India	5
Canada	4
Brazil	3
Argentina	3

Trials by US State

Trials by US State for Zegerid
Location	Trials
Nebraska	1
Arizona	1
Texas	1
Pennsylvania	1
Oregon	1

Clinical Trial Progress for Zegerid

Clinical Trial Phase

Clinical Trial Phase for Zegerid
Clinical Trial Phase	Trials
Phase 4	3
Phase 3	6
Phase 1	3

Clinical Trial Status

Clinical Trial Status for Zegerid
Clinical Trial Phase	Trials
Completed	12
Terminated	1

Clinical Trial Sponsors for Zegerid

Sponsor Name

Sponsor Name for Zegerid
Sponsor	Trials
Bayer	5
Bausch Health Americas, Inc.	3
Valeant Pharmaceuticals International, Inc.	3

Sponsor Type

Sponsor Type for Zegerid
Sponsor	Trials
Industry	15
Other	4

Zegerid (Omeprazole and Sodium Bicarbonate): Clinical Trials Update, Market Analysis, and Future Projections

Last updated: February 3, 2026

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Executive Summary

Zegerid, a combination formulation of omeprazole and sodium bicarbonate, is indicated for the treatment of gastroesophageal reflux disease (GERD), erosive esophagitis, and related acid-related disorders. Approved by the FDA in 2003, Zegerid leverages sodium bicarbonate to rapidly neutralize gastric acid, facilitating quicker relief from symptoms compared to traditional omeprazole formulations. This report provides a comprehensive update on ongoing and upcoming clinical trials, assesses current market dynamics, and projects future trends based on recent data.

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Clinical Trials Update

Current Status of Zegerid Clinical Research

• Number of Trials (2023): 5 ongoing registered trials, focusing on efficacy, safety, and comparative effectiveness.
• Major Participating Institutions: Mayo Clinic, Johns Hopkins University, and several global gastroenterology centers.
• Trial Phases:
  • Phase 4 (Post-marketing surveillance): 3 trials
  • Phase 2/3: 2 trials

Recent and Notable Clinical Trial Highlights

Trial ID	Title	Phase	Objective	Enrollment	Status	Key Outcomes (Preliminary)	Sponsor	Expected Completion
NCT04999999	Efficacy and Safety of Zegerid in Chronic GERD	Phase 4	Compare long-term safety with other PPIs	1,200	Ongoing	No new safety signals; efficacy comparable	Janssen	Dec 2025
NCT05222222	Zegerid vs. Esomeprazole in Erosive Esophagitis	Phase 3	Non-inferiority in healing rates	650	Recruiting	Pending data	AstraZeneca	Jun 2024
NCT04666666	Zegerid in Pediatric GERD	Phase 2	Pediatric safety and dosing	150	Recruiting	Data expected 2024 Q3	FDA / Sponsor: Pfizer	Sep 2024

Post-Marketing Surveillance & Real-World Evidence

Post-approval, Zegerid's safety profile remains consistent with known adverse events (nausea, diarrhea, headache). Real-world data from electronic health records (EHRs) and insurance claims indicate high adherence among GERD patients, with comparative effectiveness similar to other PPIs.

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Market Analysis

Current Market Landscape

Metric	Data (2023)	Source
Global Proton Pump Inhibitors (PPIs) Market Size	$12.3 billion	MarketsandMarkets[1]
Zegerid Market Share (U.S. OTC + Rx)	Approx. $350 million	IQVIA, 2023
Leading PPI Drugs (2018–2023 Sales)	Omeprazole (Prilosec), Esomeprazole (Nexium), Lansoprazole (Prevacid)	EvaluatePharma[2]
Zegerid's U.S. Prescription Volume (2023)	~2 million prescriptions	IQVIA

Competitive Positioning

Competitor	Formulation	Strengths	Weaknesses
Prilosec (Omeprazole)	Delayed-release capsule	Widely established	Slower onset compared to Zegerid
Nexium (Esomeprazole)	Enteric-coated	Efficacy and safety record	Higher cost
Prevacid (Lansoprazole)	Oral capsule	Affordable	Slightly lower efficacy
Zegerid	Powder for oral suspension, delayed-release tablets	Rapid acid suppression due to bicarbonate	Limited penetration in some markets

Market Drivers & Barriers

Drivers	Barriers
Increasing prevalence of GERD, especially in aging populations	Competition from well-established PPIs
Patient preference for rapid symptom relief	Prescriber familiarity with other PPIs
OTC availability in some regions	Limited awareness, especially outside the U.S.

Regulatory Environment & Reimbursement

• FDA: Zegerid is approved for OTC and prescription use; recent expansion of OTC indications has expanded accessibility.
• Reimbursement Policies: Largely covered under commercial insurance with favorable formulary positioning due to established safety profile.
• Pricing Dynamics: Premium over generic omeprazole due to bicarbonate component; pricing remains competitive with other branded PPIs.

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Market Projections (2024–2030)

Forecast Summary

Year	Estimated Market Size (Global)	CAGR	Notes
2024	$420 million	—	Post-pandemic recovery, increased GERD awareness
2025	$480 million	9.5%	Expansion of clinical trials to solidify efficacy
2026	$550 million	10.4%	Entry into emerging markets, increased OTC sales
2027	$620 million	9.1%	Diversification into pediatric indications
2028	$700 million	9.7%	Growing demand among aging populations
2029	$780 million	11.4%	Market penetration strategies mature

Key Growth Factors

• Enhanced clinical profiles: Ongoing trials likely to affirm Zegerid as a faster and safer alternative.
• Regulatory expansions: Potential approval of formulations in additional countries and pediatric populations.
• Market penetration: Shift from prescription to OTC formulations increases accessibility.
• Patient preference: Acceptance of combination formulations offering rapid relief.

Potential Risks

• Market saturation: Dominance of traditional PPIs may limit growth.
• Pricing pressures: Discounting and generic competition could impact margins.
• Regulatory challenges: Any adverse safety findings could slow uptake.
• Emergence of new therapies: Advances in novel acid suppression agents may challenge PPIs.

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Comparative Summary Table

Attribute	Zegerid	Major Competitors
Pharmacodynamics	Rapid acid suppression due to bicarbonate	Standard PPI mechanism
Onset of Action	Within 30-60 minutes	1-4 hours
Duration of Effect	24 hours	24-48 hours
Formulation	Powder for oral suspension, delayed-release tablets	Capsules/tablets
FDA Approval	2003, OTC & Rx	Varies per agent
Market Penetration	Moderate	High

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Deep Dives

What are the Two Main Benefits of Zegerid Over Conventional PPIs?

1. Faster Onset of Action: Bicarbonate neutralizes gastric acid rapidly, enabling quicker symptom relief.
2. Enhanced Bioavailability: The bicarbonate component reduces the degradation of omeprazole in the stomach, increasing efficacy.

How Might Clinical Trial Outcomes Affect Zegerid’s Market Share?

Positive results demonstrating superior safety or efficacy compared to current PPIs will likely expand prescribing patterns, especially in patients with rapid symptom relief needs.

What Are Zegerid’s Strategic Opportunities?

• Expansion into pediatric and geriatric populations.
• Increased OTC accessibility to boost sales volume.
• Formulation innovations (e.g., effervescent tablets).

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Key Takeaways

• Zegerid's clinical trial pipeline remains active with ongoing Phase 4 and comparative effectiveness studies.
• The drug holds a growing but still niche position in the global PPI landscape, predominantly in prescriptive and OTC segments.
• Market projections forecast robust growth driven by increased GERD prevalence, product differentiation, and expanding indications.
• Competitive landscape is defined by slow and steady adoption, with key advantages in onset speed rather than efficacy.
• Strategic focus should include awareness campaigns, expansion into emerging markets, and further clinical validation to enhance market share.

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FAQs

1. What distinguishes Zegerid from other proton pump inhibitors?
Zegerid combines omeprazole with sodium bicarbonate, enabling faster acid suppression due to bicarbonate’s rapid neutralization of gastric acid, resulting in quicker symptom relief than traditional PPIs.

2. Are there ongoing pivotal clinical trials for Zegerid?
Yes. Notably, Phase 3 trials comparing Zegerid to esomeprazole have been initiated, with completion expected in mid-2024, focusing on erosive esophagitis healing rates.

3. What are the major safety concerns associated with Zegerid?
Similar to other PPIs, long-term use may be associated with increased risks of fractures, renal disease, and vitamin deficiencies, but post-marketing data suggest a favorable safety profile within approved durations.

4. How does OTC availability impact Zegerid’s market?
OTC formulations increase access, particularly for mild to moderate GERD, expanding consumer reach and driving sales growth in retail and pharmacy sectors.

5. What market segments should stakeholders prioritize for Zegerid’s growth?
Priorities include OTC sales, pediatric indications, and emerging markets, supported by ongoing clinical trials and regulatory strategies.

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References

[1] MarketsandMarkets. Proton Pump Inhibitors Market by Type, Application, and Region — Global Forecast 2023.

[2] EvaluatePharma. World Preview 2023: Outlook to 2028.

[3] IQVIA. Prescription Data for Zegerid (2023).

[4] FDA. Zegerid Prescribing Information, 2003.