salvias heavy shit, personally i dont like it at all. If your gonna smoke it be prepared to loose all sence of reality and meaning, its not much of a recreational drug so you wanna be in some calm surroundings.
Be extra carful with the extract, that stuff takes you places that acid and shrooms cant even touch and thats sayin something. Definetly worth trying it once just to see what its like, but be warned the shift from reality into the trip happens so quickly, blink and youll miss it. I think thats one of the things about salvia that throws me off so much, going into such an intense trip and then back to reality again just as fast. Mad stuff indeed :p