The results of three double-blind, multicentre trials are reviewed to compare the efficacy of acetysalicylic acid (ASA) and a non-acetylated salicylate, choline magnesium trisalicylate (CMT), in the treatment of rheumatoid arthritis. In each trial, patients were randomly assigned to receive comparable doses of salicylate as either ASA or CMT. Mean values for clinical indicators of rheumatoid arthritis (number of painful joints, articular index, number of swollen joints, swelling index, duration of morning stiffness) showed similar or greater improvement among groups of patients receiving CMT, compared to those receiving ASA. In addition, the incidence of gastro-intestinal side-effects was lower among patients receiving CMT.
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