Not sure, but I do know from witnessing a friend that it causes random panic attacks and is generally a bad idea

get banned retard

SAGE has been used.

K2 horrible for you. it fucks with neurotransmitters which dictate your mood and drive. And its addicting. Bad idea. Very bad. And out can make your heart explode give you seizures and paralyze you.

>deadly
No
However in the last decade, after people began using synthetics heavily ,they've been found to be damaging in high amounts, possibly even in small ones.