“… ferrous sulfate … methyldopa there was a decrease in the proportion of methyldopa excreted as “free” methyldopa (49.5% ± 12.4% vs 21.1% ± 4.77%; p < …< 0.01), and a decrease in the percentage of methyldopa absorbed (29.1% ± 12.5% vs 7.88% ± 4.14%; p< 0.01).”