most seed companies treat their seeds with some chemical that doesnt agree with your stomach, so either use wild seeds, or do an indepth search to find the seed companies that do not treat their seeds. also, i would say to definately do an extraction, there are several places to find how online (such as erowid). i've never extracted it myself, but i have tried some once that my mom did; not quite acid, but pretty damn cool all the same.

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"I don't like people who take drugs... Customs men for example." Mick Miller.