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Tiaprofenic acid. A reappraisal of its pharmacological properties and use in the management of rheumatic diseases.


PMID 8612471

Abstract

Tiaprofenic acid is a nonsteroidal anti-inflammatory drug (NSAID) used in the treatment of patients with rheumatic diseases and other clinical conditions of pain and inflammation. Like other propionic acid derivatives, tiaprofenic acid is effective and generally well tolerated. Comparative studies in patients with rheumatoid arthritis or osteoarthritis receiving tiaprofenic acid 600 mg/day demonstrated improvements in pain intensity, duration of morning stiffness, articular index and other clinical variables which were similar to those achieved with alternative NSAIDs. Tolerability was also comparable between tiaprofenic acid and other NSAIDs in most trials; the most frequently reported adverse events involved the gastrointestinal tract. Some studies showed a trend towards fewer patient withdrawals because of adverse events with tiaprofenic acid than with NSAIDs such as indomethacin. Current evidence suggests that nonbacterial cystitis is more likely to be associated with tiaprofenic acid than with other NSAIDs. This reaction should, however, be considered in the perspective of its infrequent occurrence and its typical reversibility, and against the wider background of the established usage of tiaprofenic acid and its overall tolerability profile which is similar to that of other NSAIDs. Unlike indomethacin, tiaprofenic acid was not associated with increased cartilage degradation in a recently completed large clinical trial known as LINK, which evaluated the effects of long term administration in patients with osteoarthritis of the knee. Thus, tiaprofenic acid is an established option among the range of NSAIDs used in the treatment of patients with rheumatic diseases, with efficacy and tolerability profiles that are relatively well characterised. The availability of a sustained release dosage form of tiaprofenic acid, which has a similar efficacy and tolerability profile to the standard formulation, provides a convenient once daily dosage regimen.

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T1410900 Tiaprofenic acid, European Pharmacopoeia (EP) Reference Standard
C14H12O3S