Figure 3: The in vitro anti-giardial effects of various concentrations of TCME (1, 2, and 4 mg/mL) on Giardia lamblia trophozoites at different times (0-360 min). The data are presented as mean±SD (n=3) and analyzed using SPSS. The unpaired samples t-test, and one-way analysis of variance were used to compare the outcomes between tested groups. *P<0.001 shows a significant difference compared with the control group. MTZ: metronidazole.