psood0nym
Bluelighter
^Transdermal actually probably doesn't work.
All the other routes listed work, though, but, as has been said, with no real enhancement of bioavailability in one over any other. The only reason I can see for for bothering with rectal usage might be if the small amount you swallow when using sublingually causes you GI discomfort (possibly from LSD's agonism at serotonin receptors in your gutty works). Then again, it might just circulate through your blood and bind with those receptors through an indirect route. Still, if it makes you really nauseated it might be worth a shot.
http://www.erowid.org/general/conferences/conference_mindstates4_nichols.shtmlAnother fact: I've made LSD in my lab on many occasions for research purposes, possibly in not so meticulous a manner as Albert Hofmann. Nothing ever happened. I had several graduate students who made LSD as an intermediate for projects. No accidental ingestion of LSD ever occurred. A technician in my lab makes it routinely because we use it as a drug to train our rats. He's learned by experience that he never gets high, nothing ever happens. And yesterday I was talking to Nick Sand, and Nick said, "I made a solution of LSD in DMSO…" -- DMSO (dimethyl sulfoxide) is a chemical that greatly enhances absorption of other chemicals through the skin -- he says, "…I painted it on my skin. Nothing happened." A concentrated solution and nothing happened! How did this very meticulous Swiss chemist get the LSD into his body? I don't know.
All the other routes listed work, though, but, as has been said, with no real enhancement of bioavailability in one over any other. The only reason I can see for for bothering with rectal usage might be if the small amount you swallow when using sublingually causes you GI discomfort (possibly from LSD's agonism at serotonin receptors in your gutty works). Then again, it might just circulate through your blood and bind with those receptors through an indirect route. Still, if it makes you really nauseated it might be worth a shot.