Non-steroidal anti-inflammatory drugs (NSAIDs) reduce pain and inflammation by blocking cyclo-oxygenases (COX), enzymes that are needed to produce prostaglandins. Most NSAIDs block two different cyclo-oxygenases, called COX-1 and COX-2. COX-2, found in joint and muscle tissue, contributes to pain and inflammation. Many NSAIDs also block COX-1, which may contribute to development of ulcers and gastrointestinal bleeding depending on the magnitude of blockade. More recently, some NSAIDs have also been associated with an increased risk of serious cardiovascular events, such as myocardial infarction. The purpose of this review is to compare the efficacy, effectiveness, and harms of NSAIDs.
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