Evaluation of Analgesic Activity of the Methanol Extract from the Galls of Quercus infectoria (Olivier) in Rats

Table 2

Analgesic effect of methanol extract from the galls of Quercus infectoria by hot plate method in rats.

Treatments	Reaction time in seconds (mean ± SEM)
	0 min	15 min	30 min	45 min	60 min
Control (normal saline)	30.67 ± 5.15	28.25 ± 4.87	31.50 ± 4.57	24.08 ± 6.37	24.83 ± 6.02
Morphine sulfate	30.75 ± 5.64	37.54 ± 5.55	41.58 ± 3.22^b	41.79 ± 2.87^ab	41.46 ± 2.55^ab
Sodium salicylate	32.04 ± 4.59	27.92 ± 4.04	31.42 ± 2.61	34.38 ± 2.08	31.73 ± 1.46
Quercus infectoria (galls) extract	30.88 ± 4.08	27.67 ± 2.17	24.50 ± 3.08	27.17 ± 3.92	26.71 ± 4.06

All values by Student’s -test, significant at , and SEM = standard error mean. treatment versus control, extract versus morphine sulfate, The baseline values versus other time points within the same treatment groups were not significant. Extract versus sodium salicylate was also not significant at all time points.