salvia isnt weed. dont try it as an alternative unless you smoke straight salvia leaves, that relaxes your body and mellows you out. for the record there is no extract above 65x, things like 80 and 100x may have been filtered but the leaves can only hold upto 65 extract.
if you smoke it you need to smoke it right, out of a waterpipe with a butane lighter. take a big rip and hold it in as long as you can. repeat twice more and have a sitter because your going to be tripping your face off for 5-10 minutes but during that time you will have no conception of time and space. not to be a dick but i am well versed in psychadelic drugs and salvia done right makes you trip harder than anything else i have tried. For the record i have never tried DMT, but from what i have heard that is the only substance more powerful.