A Six-Month Double-Blind Trial to Compare the Efficacy and Safety of Meloxicam 7.5 mg Daily and Naproxen 750 mg Daily in Patients with Rheumatoid Arthritis

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Abstract
Mcloxicam is a new non-steroidal anti-inflammatory drug (NSAID) which preferentially inhibits cyclooxygenase-2 over cyclooxygenase-1, A double-blind, parallel-group trial compared meloxicam 7.5 mg once daily (n = 199) with naproxen 750 mg (n=180) in rheumatoid arthritis.There was no significant difference between the groups regarding the primary efficacy variables (global efficacy assessment by patient and investigator, number of painful/tender and swollen joints) and eight of the ten secondary efficacy endpoints.Only the swollen joint severity index and the number of discontinuations due to lack of efficacy favoured naproxen 750 mg significantly over meloxicam 7.5 mg. Meloxicam was better tolerated in the gastrointestinal (GI) tract, with fewer GI adverse events in the meloxicam-treated group (30.3%) than in the naproxen-treated group (44.7%), where two patients developed ulcers. No ulcers were seen in meloxicam patients. Significantly more patients discontinued due to GI adverse events in the naproxen group. Additionally, there was a significant decrease in haemoglobin and a significant increase in serum creatininc and urea in the naproxen group compared with the meloxicam group. In conclusion, meloxicam 7.5 mg once daily is a promising treatment in rheumatoid arthritis, with efficacy comparable to naproxen 750 mg. Meloxicam has the advantage of a significantly lower incidence of GI and renal side effects.

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