diabetic control was significantly ( p less than 0.001 ) improved by both biguanides versus pre-study , but was the same during metformin and phenformin : hbai = 13.8 +/- 0.3 sem % during pre-study 9.7 +/- 0.2 % during phenformin , 10.2 +/- 0.2 % during metformin .
C0005382
biguanides
C0025598
metformin