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JaelPendragon t1_j9y6rak wrote

It acts as a vasoconstrictor to the blood vessels in the head, it produces cerebral vasoconstriction by antagonizing adenosine receptors


Ardet_Nec_Consumitur t1_j9y6ufp wrote

Ok I'll take your word for it. But do you have any idea why drinking coffee or taking caffeine tablets completely removes my migraine? I mean in the moment when I experience the onset of a migraine, I just consume caffeine and it disappears!


JaelPendragon t1_j9y7khz wrote

Probably because your migraines are due to vasodilation, caffeine will antagonize that and restore a pain free vascular state. For what it's worth, I experience if not the same a similar situation as yours