Violation
Carbidopa, a dopa-decarboxylase inhibitor, is often used in the treatment of parkinsonism because it
Decreases the peripheral metabolism of levodopa
Potentiates the central action of norepinephrine
Potentiates the central action of dopamine
Inhibits the peripheral stimulatory fibers from the centralner vous system
Increases the permeability of the blood-brain barrier to levodopa