Originally Posted by Yael Grauer
A while ago Robb told me it has alkaloids that act on b-adrenergic sites the have some overlap with caffeine (epinepherine) and some GABA receptors
That's an odd combo of overlap; stimulatory receptor sites and inhibitory receptor sites. I suppose most adpatogens work this way, I've just never considered it.
BTW, excellent website and discussion here. I've recently subscribed to PM Journal, and I see the forum is of the same high quality material.