Table 1.

Inhibition rates of radix curcumae-derived diterpenoid C on human gastric gastric epithelium cell line cell proliferation (n = 3)

Drug level (μg/mL)	Action time
	24 h	48 h	72 h
Radix curcumae-derived diterpenoid C
0 (negative control)	-	-	-
5	4.320% ± 0.056%	5.695% ± 0.657%	9.043% ± 0.121%
10	8.409% ± 0.879%	11.734% ± 0.547%	20.512% ± 1.098%
20	10.537% ± 1.098%	19.96% ± 2.093%	29.841% ± 2.345%
40	13.273% ± 0.897%	28.473% ± 5.093%	45.723% ± 5.876%
80	15.805% ± 0.975%	65.056% ± 6.098%	79.527% ± 6.879%
Amoxicillin
0 (negative control)	-	-	-
5	6.671% ± 0.987%	7.935% ± 0.567%	10.769% ± 1.087%
10	8.325% ± 0.765%	14.769% ± 0.897%	19.130% ± 1.098%
20	9.731% ± 0.345%	18.530% ± 1.876%	29.154% ± 1.543%
40	12.929% ± 1.098%	25.691% ± 1.786%	31.832% ± 1.346%
80	14.953% ± 1.876%	38.427% ± 2.765%	43.790% ± 2.983%