Do any of you know the mechanism by which caffeine causes vasoconstriction of blood vessels to the brain, while elsewhere it triggers vasodilation? I think the vasodilation may occur because methylxanthines like caffeine increase the release of nitric oxide, which in turn relaxes smooth muscle, but what's different in the CNS? Linda Walsh University of Northern Iowa Cedar Falls, IA [EMAIL PROTECTED]
- Re: caffeine vasoconstriction Linda Walsh
