theobromine interaction with body?

Question

I need to know how the chemical theobromine(found in cocoa beans, tea, and cola beverages) acts within the body. Does it release neurotransmitters? if so, which ones. Basically I need to know the chemistry of the reactions it takes part in. And what happens when there is an excess, what interactions with the body results in poinsoning? I could not find much on the internet and the books I have. please list your sources.
Thanks!

Answer 1

http://en.wikipedia.org/wiki/Theobromine_poisoning
http://chemistry.about.com/library/weekly/aa090301a.htm
http://www.3dchem.com/molecules.asp?ID=155
http://www.phytochemicals.info/phytochemicals/theobromine.php
http://www.chocolate.org/theobromine.html
http://www.hersheys.com/nutrition/theobromine.asp
http://www.xocoatl.org/caffeine.htm

Answer 2

Look up a paper on PubMed on Theobromine Hyperkinetics.