A Multicenter, Randomized, Double-Blind, Double-Dummy Trial of Azithromycin SR Compared With Levofloxacin for the Treatment of Acute Symptoms of Chronic Bronchitis
Public ClinicalTrials.gov record NCT00644449. 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.
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 Acute Exacerbation of Chronic Bronchitis (AECB)
Study identification
- NCT ID
- NCT00644449
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 3
- Lead sponsor
- Pfizer
- Industry
- Enrollment
- 551 participants
Conditions and interventions
Conditions
Interventions
- azithromycin SR (Zithromax; compound: CP-62,993) Drug
- levofloxacin Drug
- placebo Other
Drug · Other
Eligibility (public fields only)
- Age range
- 35 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
- Dec 31, 2002
- Primary completion
- Not listed
- Completion
- Feb 29, 2004
- Last update posted
- May 15, 2011
2003 – 2004
United States locations
- U.S. sites
- 29
- U.S. states
- 14
- U.S. cities
- 24
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Pfizer Investigational Site | Birmingham | Alabama | 35215 | — |
| Pfizer Investigational Site | Birmingham | Alabama | 35233 | — |
| Pfizer Investigational Site | Columbiana | Alabama | 35051 | — |
| Pfizer Investigational Site | Tallassee | Alabama | 36078 | — |
| Pfizer Investigational Site | Mesa | Arizona | 85201 | — |
| Pfizer Investigational Site | Phoenix | Arizona | 85014 | — |
| Pfizer Investigational Site | Tempe | Arizona | 85282 | — |
| Pfizer Investigational Site | Daytona Beach | Florida | 32114 | — |
| Pfizer Investigational Site | Merritt Island | Florida | 32953 | — |
| Pfizer Investigational Site | Austell | Georgia | 30106 | — |
| Pfizer Investigational Site | Evansville | Indiana | 47712 | — |
| Pfizer Investigational Site | Madisonville | Kentucky | 42431 | — |
| Pfizer Investigational Site | New Orleans | Louisiana | 70115 | — |
| Pfizer Investigational Site | Kalamazoo | Michigan | 49009 | — |
| Pfizer Investigational Site | Royal Oak | Michigan | 48073 | — |
| Pfizer Investigational Site | Olive Branch | Mississippi | 38654 | — |
| Pfizer Investigational Site | Elkhorn | Nebraska | 68022 | — |
| Pfizer Investigational Site | Omaha | Nebraska | 68105 | — |
| Pfizer Investigational Site | Omaha | Nebraska | 68144 | — |
| Pfizer Investigational Site | Columbus | Ohio | 43214 | — |
| Pfizer Investigational Site | Columbus | Ohio | 43215 | — |
| Pfizer Investigational Site | Columbus | Ohio | 43222 | — |
| Pfizer Investigational Site | Allentown | Pennsylvania | 18102 | — |
| Pfizer Investigational Site | Harrisburg | Pennsylvania | 17011 | — |
| Pfizer Investigational Site | Harrisburg | Pennsylvania | 17110 | — |
| Pfizer Investigational Site | Morrisville | Pennsylvania | 19067 | — |
| Pfizer Investigational Site | Willow Grove | Pennsylvania | 19090 | — |
| Pfizer Investigational Site | Milan | Tennessee | 38358 | — |
| Pfizer Investigational Site | San Antonio | Texas | 78224 | — |
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 46 non-U.S. sites.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT00644449, 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 May 15, 2011 · Synced Apr 30, 2026
Related: full search, browse by condition, browse by drug or therapy, browse by sponsor, browse by U.S. city.
Open the official record
The complete protocol, eligibility criteria, and contact information for NCT00644449 live on ClinicalTrials.gov.