In the words of my friend Eugene, "it's fuckin sweet and legal."

Take 1-2 grams of dl-phenylalanine with one of those big Monster energy drinks, about 800 ug of folic acid, 65 mg of iron and 250 mg of magnesium. Then, eat a few tomato leaves or potato sprouts.

Increase your dopamine levels, THE NATURAL WAY. Not only that, d-phenylalanine (biologically inactive, technically speaking, as an amino acid) is the endorphin breakdown inhibitor. WAY COOL!

Traditionally, levodopa is administered with a DDC inhibitor such as carbidopa (e.g. Sinemet) to prevent peripheral metabolism of levodopa into dopamine. Actually, when levodopa is administered with just B6, the metabolisms cancel each other out, which is why Parkinson's research took so god damn long (they couldn't figure that out). I am not sure whether this route is "cleaner" (the B6 is an intermediate in the phenylalanine -> tyrosine -> l-dopa chain, I'm pretty sure), but anyway, if you have a lot of DDC floating around in your peripheral nervous system, expect SOME disruption of fine motor skills.