SWIM has read up on it over at Edot- seeing as how it's potentially carcinogenic he might just buy some arecoline, rather than make an extract with IPA.  It can be snorted and smoked apparently but peeps seem to prefer sublingual.

He just tried chewing some nut with sodium bicarb instead of lime and it worked a little, but not very well... even when his mouth is pre-stripped by the lime.  Yeah save your mouth