Recent Updates
Recently added Catalysts

esomeprazole magnesium

Phase 4FDA approved

Zollinger-Ellison Syndrome | Small molecule | Endocrine |AstraZeneca PLC|Trials Updated: Oct 13, 2026

esomeprazole magnesium development status

FDA approval on record Feb 20, 2001
Approval holderAstrazeneca
ApplicationNDA021153
Highest phase Phase 4 (NCT00443963)
Phase scored for AZNPhase 3
Registered trials 8 across 5 sponsors since Sep 2005

Label indication NEXIUM is a proton pump inhibitor (PPI). NEXIUM delayed-release capsules and NEXIUM for delayed-release oral suspension are indicated for the: • Short-term treatment in the healing of erosive esophagitis (EE) in adults and pediatric patients 12 years to 17 years of age. ( 1.1 ) • Maintenance of healing of EE in adults. FDA label

esomeprazole magnesium target and mechanism

Molecular targetATP4A, ATP4B
Target classInhibitor
ModalitySmall molecule

Also known as Esomeprazole magnesium (Nexium), Nexium

Success Probability

Subscribe to view

Market & Valuation

Subscribe to view

Trial Design

UNCONTROLLED
Total Trials3
Total Enrollment118

FDA Designations

No designations recorded

esomeprazole magnesium clinical trials

esomeprazole magnesium · 3 trials · 4 indications

Phase 3 2Phase 1 1
NCT05267613Endoscopic Evidence of Maintenance of Healing With Oral NEXIUM in Patients 1 to 11 Years Old With Erosive Esophagitis.Erosive Esophagitis
COMPLETED53 Analytics
NCT00079833Esomeprazole In Patients With Gastric Acid Hypersecretory States Including Idiopathic Hypersecretion and Zollinger-Ellison SyndromeZollinger-Ellison Syndrome
COMPLETED25 Analytics
PHASE3COMPLETED
Endoscopic Evidence of Maintenance of Healing With Oral NEXIUM in Patients 1 to 11 Years Old With Erosive Esophagitis.
Erosive EsophagitisUnlock trial analytics
PHASE3COMPLETED
Esomeprazole In Patients With Gastric Acid Hypersecretory States Including Idiopathic Hypersecretion and Zollinger-Ellison Syndrome
Zollinger-Ellison SyndromeUnlock trial analytics

Study Endpoints

Primary Endpoints

Presence / absence of Erosive Esophagitis
Week 24 (end of 16-week maintenance phase)

Presence/absence of Erosive Esophagitis for all patients by assessment of Esophagogastroduodenoscopy at the end of the 16-week maintenance phase

To assess the gastric acid secretory rate at the final study visit.
Control is defined as gastric acid secretory rate below 10 mEq/h or below 5 meq/h for patients with prior gastric acid reducing Surgery
Area under the plasma concentration-time curve (AUC) of esomeprazole after single oral doses of 5 mg, 10 mg and 20 mg esomeprazole in pediatric patients 1 to 11 years old inclusive with endoscopically-proven GERD.
Day 1

Secondary Endpoints

Presence/absence of Erosive Esophagitis
Week 8 (end of healing phase)
Percentage of days without rescue medication
Week 8 (end of healing phase) and Week 16 (end of maintenance phase)
The status (controlled or not controlled) of gastric acid secretory rate at the Month 6 study visit.
Unlock Study Endpoints

Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Nexium - high doseACTIVE_COMPARATORArm 1 (High dose = Healing dose)
Nexium - Low doseACTIVE_COMPARATORArm 2 (Low dose = ½ healing dose)
1EXPERIMENTALesomeprazole magnesium 5 mg, weight 8 kg to \< 20kg
2EXPERIMENTALesomeprazole magnesium 10 mg, weight 8 kg to \< 20kg
3EXPERIMENTALesomeprazole magnesium 10 mg, weight \> 20 kg
4EXPERIMENTALesomeprazole magnesium 20 mg, weight \> 20 kg

Interventions

NameTypeDescription
Nexium 20mgDRUGNexium® (Esomeprazole) gastro-resistant granules for oral suspension 10 or 20 mg taken once daily for 8 weeks, and then 10 or 5 mg taken once daily for 16 weeks.
Nexium 10mgDRUGNexium® (Esomeprazole) gastro-resistant granules for oral suspension 10 or 20 mg taken once daily for 8 weeks, and then 10 or 5 mg taken once daily for 16 weeks.
Esomeprazole magnesium (Nexium)DRUG -
esomeprazole magnesiumDRUGcapsules, oral, qd, one day
Unlock Study Design Details

Eligibility Criteria

Age Range1 Year to 11 Years
SexALL
Healthy VolunteersNo
Study Sites41

Inclusion Criteria: 1. Patient must be 1 to 11 years of age 2. Patients must have a clinical history of GERD for at least 3 months before the start of study 3. For the healing phase: Patients must have confirmed presence of EE at endoscopy performed within one week of the start of the healing phase...

Countries:United StatesArgentinaAustraliaBelgiumGreeceItalyLithuaniaPortugalSpainVietnamFrance
Unlock Eligibility Criteria

Recent Changes (Last 90 Days)

HIGHOct 13, 2026NCT05267613Status: ACTIVE_NOT_RECRUITING → COMPLETED
HIGHOct 13, 2026NCT05267613Status: ACTIVE_NOT_RECRUITING → COMPLETED

Frequently asked questions about esomeprazole magnesium

What is esomeprazole magnesium used for?

Esomeprazole magnesium is used for endoscopically-proven gastroesophageal reflux disease (GERD) and for gastric acid hypersecretory conditions including Zollinger-Ellison syndrome. It is a small molecule developed by AstraZeneca PLC under the ticker AZN. Clinical study NCT00687245 evaluated it in children 1 to 11 years old with endoscopically-proven GERD.

What does esomeprazole magnesium target?

Esomeprazole magnesium targets ATP4A and ATP4B, the subunits of the gastric proton pump. It acts as an inhibitor of this target. By inhibiting the proton pump, it reduces gastric acid secretion, which is the basis for its use in acid-related conditions such as GERD and Zollinger-Ellison syndrome.

Who makes esomeprazole magnesium?

Esomeprazole magnesium is developed by AstraZeneca PLC, which trades under the ticker AZN. The company is the sponsor behind the clinical studies of this small molecule in gastrointestinal conditions, including endoscopically-proven GERD and Zollinger-Ellison syndrome.

What phase is esomeprazole magnesium in?

Esomeprazole magnesium is in Phase 1 development according to its current development stage. It is an investigational small molecule and is not stated to be approved. Its clinical program includes a completed Phase 1 pharmacokinetic study and a completed Phase 3 study in gastric acid hypersecretory states.

What clinical trials is esomeprazole magnesium in?

Esomeprazole magnesium has been studied in NCT00687245, a completed Phase 1 pharmacokinetic trial in patients 1 to 11 years old with endoscopically-proven GERD, and NCT00079833, a completed Phase 3 trial in patients with gastric acid hypersecretory states including idiopathic hypersecretion and Zollinger-Ellison syndrome.

Is esomeprazole magnesium the same as Nexium?

Yes, esomeprazole magnesium is also known as Nexium. Esomeprazole magnesium (Nexium) is the same active small molecule developed by AstraZeneca PLC under the ticker AZN. Both names refer to the same agent studied in GERD and Zollinger-Ellison syndrome.