Clinical Study

A Randomized Pilot Trial to Evaluate the Bioavailability of Natural versus Synthetic Vitamin B Complexes in Healthy Humans and Their Effects on Homocysteine, Oxidative Stress, and Antioxidant Levels

Figure 8

Serum homocysteine levels in the follow-up for both subgroups supplemented with natural (filled circles) or synthetic (open circles) B vitamins. Blood sampling: —immediately before the first supplement; —subsequent to the first supplementation; ; ; (end of supplementation); and (washout period) from baseline. Data are presented as . Significant differences () were indicated at the respective timepoints for natural supplements () and synthetic supplements (#).