Parameters Ordinary water Zamzam water Control* Carbon tetrachloride Control* Carbon tetrachloride Catalase (nM/min/ml) 85.22 ± 21.09 a 177.74 ± 16.88 b 53.55 ± 4.07 a 164.97 ± 18.17 b Superoxide Dismutase  (U/ml) 2.30 ± 0.34 a 12.99 ± 1.13 b 2.35 ± 0.12 a 12.12 ± 0.50 b Serum glutathione  (µM) 4.18 ± 1.45 ab 20.26 ± 3.89 c 2.39 ± 0.83 a 10.30 ± 2.51 b Total antioxidant capacity (mM) 2.52 ± 0.45 a 4.81 ± 1.19 a 2.63 ± 0.51 a 3.56 ± 0.41 a TBARS (µM) 82.42 ± 21.83 a 28.80 ± 6.47 a 64.64 ± 8.77 a 49.77 ± 11.03 a Means in the same row with the same letter are not significantly different.

Table 5: Serum catalase, superoxide dismutase, total antioxidant capacity, glutathione and tbars in rats given ordinary and Zamzam water, with or without high dose (2 ml/ kg, experiment 1) carbon tetrachloride treatment.