i've only smoked 20x salvia, and only gone to the trouble twice.

My first trip i took a hit and was pretty obliterated for 3 minutes.

My second trip i took two hits, and by the time i was done with the first one, i was trying to hit the bowl backwards. I tripped damn hard for a couple minutes, but colors were blended for a good 15 minutes.

I've heard of a friend of mine ripping it out of a bong and tripping for 45 minutes. seems ridiculous, but what if?