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Anti-Inflammatory, Antinociceptive, and Sedating Effects of Lafoensia pacari. Aqueous Extract

Abstract The acetic acid–induced abdominal writhing, the tail flick, and the croton oil–induced mouse ear edema tests were used to study the anti-inflammatory effects of the aqueous extract from Lafoensia pacari. A. St.-Hil. (Lythraceae) stem bark. Pentobarbital-induced sleeping time was used to study the central nervous system depressant effect of the extract. The aqueous extract caused a dose-dependent inhibition of acetic acid–induced abdominal writhing and ear edema formation and produced a significant (p < 0.05) dose-related increase in the duration of sleep. The results suggest that Lafoensia pacari. stem bark contains compounds with anti-inflammatory, analgesic, and central depressant actions.