Re:Ask HN: I'm writing a book about white-collar drug use, i...
by bickford on Monday February 26, 2018 @11:55PM
(#16471164)
I am not up to date on the research. A few years ago the stimulant in mate was more broadly classified as a xanthine, not specifically caffeine.
This sounds very dubious. Caffeine has only one stereoisomer. And if you mean a structural isomer, then it's not actually caffeine any more.