oo the great mysteries of life...
some cacti have synergetic alkaloids that "flavor" the mescaline experienc/
very little is known about them, ie dioes heat or extraction reduce them(subjectively yes it may) we also dont know which of them are extracted using the methods that are around these days.
mescaline itself willNOT be damaged by heat or extraction, its one tough alkaloid
one of my favorite methods is to eat a medium amount of crystal mescaline, then eat peto until i cant eat any more.
the peyo alks add to the experience for sure