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

Table 2

Serum concentrations for B vitamins, homocysteine, antioxidants, peroxidase activity, peroxides, and polyphenols.

	T1 ()	T2 ()	T3 ()	T4 ()	T5 ()	T6 ()
Thiamine (μg/L)
N
S
Riboflavin (μg/L)
N
S
Pyridoxine (μg/L)
N
S
Folic acid (ng/mL)
N
S
Cobalamin (pg/mL)
N
S
Homocysteine (μmol/L)
N
S
Total antioxidants (mmol/L)
N
S
Endogenous peroxidase activity (U/L)
N
S
Total peroxides (μmol/L)
N
S
Polyphenols (mmol/L)
N
S