Abstract
The analgesic efficacy of single 500 and 1,000 mg doses of diflunisal, a new nonsteroidal antiinflammatory analgesic, was compared in a double-blind study with acetaminophen 600 mg, the combination of acetaminophen 600 mg with codeine 60 mg, and placebo in 132 inpatients with postoperative pain. Using a self-rating record, patients rated their pain and its relief hourly for up to 12 hours after medication. Diflunisal 500 and 1,000 mg were significantly superior to placebo for every measure of total and peak analgesia, and a significant analgesic effect persisted for 8 hours. Acetaminophen alone and the acetaminophen-codeine combination were significantly superior to placebo for most measures of analgesia, and their effects were significant for 4 and 5 hours respectively. Differences among the active medications were not statistically significant for measures of total or peak analgesia.
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