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Completed Phase 3 Interventional

A Multicenter, Randomized, Double-Blind, Double-Dummy Trial of Azithromycin SR Compared With Levofloxacin for the Treatment of Mild to Moderate Pneumonia in Adult Patients

ClinicalTrials.gov ID: NCT00643734

Public ClinicalTrials.gov record NCT00643734. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Oct 17, 2026, 4:07 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Official title

A Multicenter, Randomized, Double-Blind, Double-Dummy Comparative Trial of Azithromycin SR Versus Levofloxacin for the Treatment of Mild to Moderate Community-Acquired Pneumonia in Adults

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

The study was performed to see if a single, 2.0-g oral dose of azithromycin sustained release (SR) was at least as effective as a 7-day regimen of levofloxacin (500 mg once daily) for the treatment of mild to moderate community-acquired pneumonia, and to assess the efficacy and safety of both treatment regimens.

Study identification

NCT ID
NCT00643734
Recruitment status
Completed
Study type
Interventional
Phase
Phase 3
Lead sponsor
Pfizer
Industry
Enrollment
468 participants

Conditions and interventions

Conditions

Interventions

Drug · Other

Eligibility (public fields only)

Age range
18 Years and older
Sex
All
Healthy volunteers
Healthy volunteers not accepted

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
Apr 2003 (Type not available)
Primary completion
Not listed
Completion
Apr 2004 (Actual)
Last update posted
Mar 26, 2008

2003 – 2004

United States locations

U.S. sites
35
U.S. states
23
U.S. cities
31
Facility City State ZIP Site status
Pfizer Investigational Site Mesa Arizona 85206 —
Pfizer Investigational Site Phoenix Arizona 85014 —
Pfizer Investigational Site San Luis Obispo California 93401 —
Pfizer Investigational Site San Mateo California 94403 —
Pfizer Investigational Site Highlands Ranch Colorado 80130 —
Pfizer Investigational Site Newark Delaware 19702 —
Pfizer Investigational Site Kissimmee Florida 34741 —
Pfizer Investigational Site Merrit Island Florida 32953 —
Pfizer Investigational Site Evansville Indiana 47712 —
Pfizer Investigational Site Evansville Indiana 47714 —
Pfizer Investigational Site Indianapolis Indiana 46254 —
Pfizer Investigational Site Dubuque Iowa 52001 —
Pfizer Investigational Site Pratt Kansas 67124 —
Pfizer Investigational Site Madisonville Kentucky 42431 —
Pfizer Investigational Site Cumberland Maryland 21502 —
Pfizer Investigational Site Kalamazoo Michigan 49009 —
Pfizer Investigational Site Olive Branch Mississippi 38654 —
Pfizer Investigational Site Elkhorn Nebraska 68022 —
Pfizer Investigational Site Omaha Nebraska 68144 —
Pfizer Investigational Site Rio Rancho New Mexico 87124 —
Pfizer Investigational Site Charlotte North Carolina 28209 —
Pfizer Investigational Site Charlotte North Carolina 28210 —
Pfizer Investigational Site Charlotte North Carolina 28262 —
Pfizer Investigational Site Hickory North Carolina 28601 —
Pfizer Investigational Site Yukon Oklahoma 73099 —
Pfizer Investigational Site Downingtown Pennsylvania 19335 —
Pfizer Investigational Site King of Prussia Pennsylvania 19406 —
Pfizer Investigational Site Morrisville Pennsylvania 19067 —
Pfizer Investigational Site Greer South Carolina 29651 —
Pfizer Investigational Site Dyersburg Tennessee 38024 —
Pfizer Investigational Site Lake Jackson Texas 77566 —
Pfizer Investigational Site Salt Lake City Utah 84109 —
Pfizer Investigational Site Salt Lake City Utah 84121 —
Pfizer Investigational Site Walla Walla Washington 99362 —
Pfizer Investigational Site Menomonee Falls Wisconsin 53051 —

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

Non-U.S. locations

This page focuses on the U.S. directory. The official record also lists 30 non-U.S. sites.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT00643734, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted Mar 26, 2008 · Synced Oct 17, 2026

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Open the official record

The complete public registry record, listed eligibility criteria, and available contact information for NCT00643734 live on ClinicalTrials.gov.

View official ClinicalTrials.gov record →