salvia: how much should i use?

what about 20x? I think im gonna get some soon and thats all they sell. How much should one person take to feel the full effects without overdoing it?
thanks

Well, It's humanly impossible to O.D. on salvorin a (active chemical in salvia divinorum) but roughly a gram. I myself made a a nice cup of salvia tea just last night by simply removing the contents of a teabag, and adding about a gram or so of salvia. 45 minutes to an hour later I was rolling around on the floor in my trip... but be warned the effects of the tea can last up to several hours.