Figure 5From: An open label pilot study to evaluate the efficacy of Spanish black radish on the induction of phase I and phase II enzymes in healthy male subjects The serum concentration of liver enzyme at baseline and 4 weeks. Serum concentration of aspartate transaminase (AST), alanine transaminase (ALT) and γ-glutamyl transferase (GGT) at baseline (0 weeks) and following 4 weeks of SBR supplementation. Although no changes in AST and ALT were seen, a significant reduction in GGT was seen after 4 weeks of supplementation (*P = 0.002).Back to article page