A group of nursing students are preparing for a class presentation to discuss drugs used to treat parkinson disease. which drug would the group include when discussing dopaminergic agents?

The group could include the drug levodopa as well as the dopamine agonists. Levodopa is a precursor of dopamine. While dopamine does not pass the blood-brain barrier, the levodopa does and it is transformed in dopamine as soon as it passes the barrier becoming free dopamine to be used in the brain - it is the lack of it that is the base of the Parkinson's disease. The dopamine agonists work alike, binding directly to the dopamine receptors, mimetising its action.