Protective effect of HZJW and raniditine on ulcerative lesion induced by NSAID. (A) Ulcerative lesion index; (B) Ulcer inhibition (%). Vehicle group (Open column), ranitidine group (250 mg/kg/d, grey bar), HZJW groups (260, 520, and 1040 mg/kg/d, dark bars). Vertical bars represent standard deviation (S.D.), where n = 10. Asterisks designate significant differences: *P < 0.05 & **P < 0.01 vs. Vehicle group.