I've never went that far with salvia, last time I done it, I couldnt stop laughing even though nothing was funny. Then I was trying to talk but I couldnt from laughing so much then that made me laugh even more.
You get the picture.
I think there are 5 different stages, and uncontrollable laughter is the effect of a very mild dose.
I bought some x15 off the net and I've had it sitting there for about 6 months, too scared to smoke it, how pathetic is that lol. Just read too many horror stories and seen a major freakout in front of my own eyes so I'm ultra wary of it. Its certainly not something to get high off, thats for sure