Cabgolin contains an active component called Cabergoline. This drug belongs to a class of drugs called dopamine agonists. It works to stop the transport of dopamine neurotransmitters as it binds the dopamine receptors and inhibits dopamine transport. A higher level of dopamine inhibits the production of the prolactin hormone. The dopamine level directly impacts the pituitary gland and slowdowns the secretion. Therefore, this drug inhibits the further activity of prolactin and controls its levels in your body.