Which of the following statements is TRUE about levodopa?
A) It can be given in very small oral doses to be effective.
B) It is the metabolic precursor of acetylcholine.
C) It cannot cross the blood-brain barrier.
D) All of these statements are false.
Answer: D
A) Levodopa must be given in large doses to be effective.
B) Levodopa is the metabolic precursor of dopamine.
C) Levodopa can cross the blood-brain barrier.
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