Articles: acetaminophen.
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Aspirin and acetaminophen are the mainstays of oral analgesic combinations. One group of combinations is composed of antipyretic-analgesics combined with each other. ⋯ On the other hand, there is substantial evidence that combinations of an optimal dose of aspirin or acetaminophen with a narcotic (eg, codeine, hydrocodone, or oxycodone) produce an additive analgesic effect greater than that obtained by doubling the dose of either constituent administered alone. There is also some evidence that the adverse effects produced by such combinations are less than would be produced by an equianalgesic dose of a single constituent.
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Eur. J. Clin. Pharmacol. · Jan 1981
Randomized Controlled Trial Clinical TrialPharmacokinetics of parenteral paracetamol and its analgesic effects in post-operative dental pain.
A double-blind, randomised, crossover trial was undertaken to compare the analgesic effects of a single dose of paracetamol (1000 mg i.v.) with placebo in the immediate post-operative period following removal of impacted lower third molars. There was no significant difference in the pain relief between paracetamol and placebo in the first hour following injection. ⋯ Plasma concentrations of paracetamol were measured and pharmacokinetic variables were determined. Over the four hour period of investigation there was no clear relationship between analgesia and paracetamol concentration in either central or peripheral compartments.
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Br J Clin Pharmacol · Oct 1980
Randomized Controlled Trial Clinical TrialMethodological considerations in the evaluation of analgesic combinations: acetaminophen (paracetamol) and hydrocodone in postpartum pain.
1 In a double-blind study, 108 postpartum patients received single oral doses of either placebo, acetaminophen (paracetamol) 1000 mg, hydrocodone 10 mg, the combination of acetaminophen plus hydrocodone, or codeine 60 mg. 2 In the 2X2 factorial analysis, both the acetaminophen and hydrocodone effects were statistically significant, whereas the interaction contrast was not. This indicates that the analgesic effect of the combination represents the additive effect of its constituents and is consistent with the assumption that these constituents are producing analgesia by different mechanisms. 3 Although significantly superior to placebo, codeine seemed to be inferior to the other treatments. 4 Compared with placebo, both codeine and hydrocodone (centrally acting narcotics) seemed relatively more effective in uterine cramp than episiotomy pain; the reverse seemed true with acetaminophen (a peripherally acting analgesic). 5 Some methodological implications for the evaluation of analgesic combinations are discussed.
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Comparative Study Clinical Trial
[Effectiveness of fenalgin SPOFA in lumboischiadic syndrome (author's transl)].
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Randomized Controlled Trial Clinical Trial Controlled Clinical Trial
Analgesic combinations with orphenadrine in oral post-surgical pain.
Two hundred male and female patients underwent a variety of oral surgical procedures and were treated afterwards in four test groups. They took a combination of orphenadrine (25 mg) and acetaminophen (325 mg), either drug alone, or placebo. A double-blind study design was used. ⋯ Each active drug, in turn, was also significantly better throughout than placebo for pain relief. Sub-groups in each treatment regimen required additional pain relief prior to six hours, with significantly more placebo than orphenadrine-acetaminophen patients needing remedication. Side-effect incidence was very low and randomly distributed among the four groups.