Peripheral analgesic activity (represented by mean ± SEM) number of writhing and stretching in writhing test) of CUR compound and extracts of ZO, AL, PC, and PPF at various dose levels, in comparison with untreated control and aspirin (reference control). Statistically significant difference by ANOVA, followed by post hoc scheffe test: CUR-treated group at low dose level vs. control group (p < 0.01). CUR-treated group at medium dose level vs. control group (p < 0.001). CUR-treated group at high dose level vs. control group (p < 0.001). Aspirin-treated group vs. control group (p < 0.001).
Plengsuriyakarn et al. BMC Complementary and Alternative Medicine 2012 12:23 doi:10.1186/1472-6882-12-23