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PTECH Pharmacology QUESTION #5766
Question 1
Why is Levodopa administered instead of pure Dopamine for Parkinson's?
  • Dopamine is toxic to the liver
  • Levodopa is absorbed more slowly
  • Dopamine cannot cross the blood-brain barrier✔️
  • Levodopa acts on Muscarinic receptors
Correct Answer Explanation
Dopamine cannot cross the BBB; Levodopa is a precursor that can.