Analgesic Efficacy of the [kappa]-Receptor Agonist, Enadoline, in Dental Surgery Pain (original) (raw)

Clinical …, 1996

Abstract

To study the analgesic efficacy of enadoline, a selective agonist of the kappa-opioid receptor, a double-blind, randomized comparison was made of enadoline versus placebo and a combination of acetaminophen-codeine in patients with pain after surgical extraction of impacted molar teeth. An initial study involving a comparison of enadoline, a combination, and placebo failed to show any analgesic effect of enadoline. Therefore, a second study with the same design but using higher doses of enadoline was conducted. Despite continued safety and tolerability even at the higher doses, enadoline could not be shown to be superior to placebo. The acetaminophen-codeine combination was significantly more effective than enadoline or placebo. Enadoline did not show analgesic efficacy in this study. Possible reasons for this lack of efficacy are discussed.

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