the administration of substances resulting in stimulation of pituitary dopamine receptors , such as dopamine and l-dopa , induced a normal prl suppression in 7 patients with hypothalamic disease so tested , whereas central nervous system-acting dopaminergic drugs , such as carbidopa plus l-dopa and nomifensine , failed to lower prl levels in most cases ( even when normoprolactinemic after surgery ) .
C0023570
l-dopa
C0353697
carbidopa