KROK 1 2018 – Question 142 · KROK (Medicine) · Pharmacology

A patient with parkinsonism was prescribed levodopa, which led to rapid improvement of the patient’s condition. What is the mechanism of action of this drug?

  1. A. Muscarinic acetylcholine receptor stimulation
  2. B. Muscarinic acetylcholine receptor blockade
  3. C. Stimulation of dopamine synthesis
  4. D. Stimulation of dopamine receptors
  5. E. Anticholinesterase action
Hint

Consider the chemical relationship between this drug and the transmitter that is deficient in parkinsonism, and why the transmitter itself cannot simply be given.

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