Table 3: Effect of metformin with vitamin C on FBG, PPBG, HbA1c and plasma AA in patients with type 2 diabetes mellitus after 12 weeks of treatment.

ParameterBefore treatmentAfter treatment 𝑃 (paired)

FBG 1 5 7 . 6 3 ± 3 . 1 3 1 4 1 . 1 8 ± 3 . 8 1 <0.01
PPBG 2 2 2 . 2 4 ± 3 . 1 6 2 0 6 . 6 9 ± 3 . 3 1 <0.05
HbA1c 8 . 2 6 ± 0 . 0 9 7 . 8 0 ± 0 . 0 8 <0.01
Plasma AA 0 . 2 6 ± 0 . 0 0 8 0 . 4 5 ± 0 . 0 1 <0.001

𝑛 = 3 3 in number, FBG: fasting blood glucose, PPBG: postmeal blood glucose, HbA1c: glycosylated hemoglobin, plasma AA: plasma ascorbic acid. FBG, PPBG, and plasma AA are measured in mg/dL.