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Factorial Study of Metoprolol Succinate TOPROL-XL (324A)

This study has been completed.
Sponsor:
ClinicalTrials.gov Identifier:
NCT00642096
First Posted: March 24, 2008
Last Update Posted: March 25, 2009
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Information provided by:
AstraZeneca
  Purpose
The purpose of this research study is to determine if treatment with the combination of metoprolol succinate and hydrochlorothiazide is more effective at lowering blood pressure than treatment with either of the two drugs alone. The study will also determine which combined doses of metoprolol succinate and hydrochlorothiazide are most effective at lowering blood pressure (without unacceptable side effects), and whether it is possible to combine both drugs in a single tablet to simplify blood pressure treatment.

Condition Intervention Phase
High Blood Pressure (Hypertension). Drug: Metoprolol Succinate Drug: Hydrochlorothiazide Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double
Primary Purpose: Treatment
Official Title: A Phase III, Multi-Center, Randomized, Double-Blind, Placebo-Controlled, Parallel-Group Factorial Study of Metoprolol Succinate Extended Release Tablets (TOPROL-XL) Hydrochlorothiazide and Their Combination in Patients With Essential Hypertension.

Resource links provided by NLM:


Further study details as provided by AstraZeneca:

Primary Outcome Measures:
  • Change in trough sitting diastolic blood pressure [ Time Frame: 3 readings determined at 8 weeks after treatment ]

Secondary Outcome Measures:
  • change in trough Sitting Systolic Blood pressure [ Time Frame: 3 readings determined at 8 weeks after treatment ]
  • change in trough Standing Systolic Blood Pressure [ Time Frame: 6 readings determined at 8 weeks after treatment ]
  • change in trough standing diastolic blood pressure [ Time Frame: 6 readings determined at 8 weeks after treatment ]

Estimated Enrollment: 1900
Study Start Date: June 2003
Study Completion Date: July 2004
Primary Completion Date: July 2004 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: 1
Metoprolol Succinate + Hydrochlorothiazide
Drug: Metoprolol Succinate
Other Name: TOPROL-XL
Drug: Hydrochlorothiazide
Active Comparator: 2
Metoprolol Succinate
Drug: Metoprolol Succinate
Other Name: TOPROL-XL
Active Comparator: 3
Hydrochlorothiazide
Drug: Hydrochlorothiazide

  Eligibility

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.


Ages Eligible for Study:   18 Years to 80 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Diastolic blood pressure between 95 and 114 mm at screening and start of treatment

Exclusion Criteria:

  • Significant conditions which in the opinion of the investigator place the subject at undue risk, eg Renal impairment, hepatitis
  • Known secondary causes of hypertension, eg, Cushing's syndrome, renal artery stenosis, pheochromocytoma, hyperaldosteronism
  • Systolic blood pressure greater or equal to 180 mm Hg at start of trial
  Contacts and Locations
Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00642096


Sponsors and Collaborators
AstraZeneca
Investigators
Principal Investigator: Vasilios Papademetriou Georgetown University
  More Information

ClinicalTrials.gov Identifier: NCT00642096     History of Changes
Other Study ID Numbers: D4026C00001
First Submitted: March 18, 2008
First Posted: March 24, 2008
Last Update Posted: March 25, 2009
Last Verified: March 2009

Keywords provided by AstraZeneca:
High blood pressure
hypertension
(TOPROL-XL)
metoprolol succinate
hydrochlorothiazide

Additional relevant MeSH terms:
Hypertension
Vascular Diseases
Cardiovascular Diseases
Hydrochlorothiazide
Metoprolol
Antihypertensive Agents
Diuretics
Natriuretic Agents
Physiological Effects of Drugs
Sodium Chloride Symporter Inhibitors
Membrane Transport Modulators
Molecular Mechanisms of Pharmacological Action
Anti-Arrhythmia Agents
Sympatholytics
Autonomic Agents
Peripheral Nervous System Agents
Adrenergic beta-1 Receptor Antagonists
Adrenergic beta-Antagonists
Adrenergic Antagonists
Adrenergic Agents
Neurotransmitter Agents