I have the book but the binding is falling apart. It was published in 1981, and I picked it up along the way somewhere. It covers a wide variety of topics including L-Dopa for Parkinsons. Not sure how that has panned out since 1981 but found out that 5 Hour Energy which I frequently use has L-Tyrosine, a precursor for dopamine. I always like 5HE and this might indeed explain why. I'm not sure when I began 5HrE... it might have been 2009 but I'll have to check records to be sure.
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