Yes, l-dopa is a precursor to dopamine production. L-dopa therefore has to cross the BBB.
It is important to understand the difference between l-dopa and dopamine.
Please read the Wiki article I linked, which explains this.
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All truths are easy to understand once they are discovered; the point is to discover them.-- Galileo Galilei
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Weezie looking at petunias 8.25.2017
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