This investigation was designed to compare between inhibitory effect of cefotaxime sodium and their
complexes with heavy metals (iron and copper). In this study, five concentrations were used in range
from 0.01 M to 0.005 M for cefotaxime sodium and 0.005 mL, 0.01mL from FeCl3 with 0.01mL
cefotaxime sodium, and 0.005ml CuCl2 with 0.01mL cefotaxime. The statistical analysis results showed
that cefotaxime sodium (0.01mL) have a highest inhibition effect on bacterial growth, and iron have a
synergistic effect with cefotacime more than Copper. Also it was found that, E.coli species were recorded
as most affected species by cefotaxime sodium, and their complexes relative to other species.