Although L-dopa does have some beneficial effects,it is not a solution to the problem of Parkinson's disease because it
A) typically becomes less and less therapeutically effective with use.
B) is too expensive.
C) can be safely administered to only a small proportion of patients.
D) is unstable at room temperature.
E) does not pass through the blood-brain barrier.

Question

Quizplus · Accepted Answer

L-dopa loses its effectiveness over time as the brain adapts to it, meaning that it is not a long-term solution for Parkinson's disease.

Although L-Dopa Does Have Some Beneficial Effects,it Is Not a Solution