No. Salvia will not cure your insatiable appetite for your current plant addiction. hehe

Salvia is a LOT different than weed, and at most...you feel the effects for 5 minutes, after-effects for 20 or so. Though, you feel this deep-rooted connection with every thing on the planet for a couple days after that.

But other than that, I don't think you'll be very satisfied buying an ounce of salvia leaves off your friend if you're looking for a weed kind of high.