The effect of caffeic acid on the biochemical parameter of streptozotocin (STZ) induced gestational diabetes mellitus (GDM) induced rats at end of the experimental study. A, the HbA1c, serum C-peptide, free fatty acid, FINSand; B, hepatic glycogen. Dunnett’s multiple test was performed for the statistical analysis. Treated group rats compared with the STZ induced GDM group rats. *p<0.05 consider as the significant, **p<0.01 consider as the more significant and ***p<0.001 consider as the most significant.