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by caycep 3747 days ago
The impulsivity seen in patients only happens in the synthetic, and possible more "selective" dopamine agonists that work more with certain dopamine receptor subtypes. Whereas, levodopa, which is a dopamine precursor and presumable not selective at all (ie. works on all receptors) do not have the impulsivity effect, or at least as dramatic, on these same or similar patients.