Study of Flavocoxid (Limbrel) vs Naproxen in Subjects With Mod-Severe Osteoarthritis of the Knee
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ClinicalTrials.gov Identifier: NCT00435292 |
Recruitment Status :
Completed
First Posted : February 14, 2007
Last Update Posted : October 21, 2015
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Condition or disease | Intervention/treatment | Phase |
---|---|---|
Osteoarthritis | Drug: Naproxen Dietary Supplement: flavocoxid 250 mg Dietary Supplement: flavocoxid 500 mg | Not Applicable |
This will be a randomized, double blind, placebo controlled, parallel group, multi-center study in subjects with moderate-severe OA. Subjects will be randomized to receive flavocoxid 250 mg bid, flavocoxid 500 mg bid, naproxen 500 mg bid or placebo in a 2:2:2:1 ratio. Subjects will take study materials twice daily for twelve (12) weeks. After the 12 week visit subjects in the placebo arm will be re-randomized to the two flavocoxid arms. All subjects will then continue on the study for an additional 12 weeks.
Subjects will keep a diary noting date of onset of symptom change (better or worse), adverse events and cost of all aspects of medical care related directly or indirectly to osteoarthritis.
Laboratory studies for inflammatory markers will be drawn and archived at baseline and at the 12 week visit. In addition, a subgroup of subjects will have arthrocenteses performed at baseline and the 12 week visit and the synovial fluid archived for study of intra-articular inflammatory markers.
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 350 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | Triple (Participant, Investigator, Outcomes Assessor) |
Primary Purpose: | Treatment |
Official Title: | A Double-Blind, Randomized, Placebo Controlled, Parallel Group, Multi Center Study of Flavocoxid ( Limbrel) vs Naproxen in Subjects With Moderate-Severe Osteoarthritis of the Knee |
Study Start Date : | April 2006 |
Actual Primary Completion Date : | December 2007 |
Actual Study Completion Date : | December 2007 |

Arm | Intervention/treatment |
---|---|
Experimental: flavocoxid 250 mg
flavonoid mixture
|
Dietary Supplement: flavocoxid 250 mg
flavonoid mixture
Other Name: Limbrel 250 mg |
Active Comparator: flavocoxid 500 mg
flavonoid mixture
|
Dietary Supplement: flavocoxid 500 mg
flavonoid mixture
Other Name: limbrel 500 mg |
Active Comparator: naproxen
nonsteroidal antiinflammatory drug
|
Drug: Naproxen
nonsteroidal anti-inflammatory drug
Other Name: naprosyn |

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Ages Eligible for Study: | 35 Years to 85 Years (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- OA of the Knee
- K-L Grade 2-3
- Positive response to NSAIDS
Exclusion Criteria:
- K-L grade 1 0r 4 OA of the knee
- History of GI Bleed within past 5 years
- Chronic bleeding disorder

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): NCT00435292
United States, Arizona | |
Primus Pharmaceuticals, Inc | |
Scottsdale, Arizona, United States, 85251 |
Study Director: | Robert M Levy, MD | Primus Pharmaceuticals,Inc | |
Principal Investigator: | Alan Kivitz, MD | Private Practice |
Responsible Party: | Primus Pharmaceuticals |
ClinicalTrials.gov Identifier: | NCT00435292 |
Other Study ID Numbers: |
LOA-03P |
First Posted: | February 14, 2007 Key Record Dates |
Last Update Posted: | October 21, 2015 |
Last Verified: | November 2008 |
Osteoarthritis Osteoarthritis, Knee Arthritis Joint Diseases Musculoskeletal Diseases Rheumatic Diseases Naproxen Anti-Inflammatory Agents, Non-Steroidal Analgesics, Non-Narcotic Analgesics |
Sensory System Agents Peripheral Nervous System Agents Physiological Effects of Drugs Anti-Inflammatory Agents Antirheumatic Agents Gout Suppressants Cyclooxygenase Inhibitors Enzyme Inhibitors Molecular Mechanisms of Pharmacological Action |