Clinical efficacy and tolerance of nabumetone in articular and non-articular rheumatic disorders: personal experience during 12 weeks of treatment.

BACKGROUND: We evaluated the clinical efficacy and the tolerance of Nabumetone (N), in comparison with a pool of non-steroidal anti-inflammatory drugs (NSAIDs), in a cohort of patients affected by rheumatoid arthritis, osteoarthritis, non-articular rheumatisms and primary fibromyalgic syndrome. METHODS: One hundred and seventy patients were observed in an open-non randomized study. The patients have been recruited alternatively and subdivided into two groups: 84 patients that received N and 86 patients that received one of the other NSAIDs. All the patients affected by rheumatoid arthritis received a disease-modifying anti-rheumatic drug (OH-chloroquine, d-penicillamine, auranofin, cyclosporine-A); while benzodiazepines are administered in the patients suffering from primary fibromyalgic syndrome. A follow-up not inferior to 12 consecutive weeks was realized and the following clinical parameters were studied: spontaneous pain, provoked pain, pain on active movement, pain on passive movement, pain at rising, pain at bed time, morning stiffness, limited joint mobility, number of tender points, number of affected joints and number of swollen joints. All the patients were monitored for hematological, biochemical, urinary and clotting tests. RESULTS: The results revealed an excellent tolerability of nabumetone with a clinical efficacy not inferior to the NSAIDs' pool. Moreover, the number of drop-outs in the N-group were significantly inferior in comparison to the NSAIDs'-pool group. CONCLUSIONS: We conclude that N can be considered as effective as other NSAIDs. Moreover it seems to be better tolerated that the other NSAIDs utilized in our study.