Figure 2: Effect of homoeopathic drug Berberis vulgaris on non-enzymatic antioxidants in acute hyperoxaluria experimental rats. (a) Vitamin C. (b) Vitamin E. (c) Reduced glutathione. Values are expressed as mean ± standard error of the mean for six animals in each group. The letters 'a' and 'b' represent comparative study with Group I and Group II, respectively. The symbol * represents statistical significance at P < 0.05