I dont find sublingual harmine any more sedating than oral. I also think that graph is off a bit. Mushrooms dont plateau for that long. Mushrooms typically peak for like 40 minutes to an hour unless you redose. The experience goes for hours yes but definatily does not peak for hours. I have taken them at least 100 times and a true peak of about 45 minutes is consistant for me unless I have taken a gigantic dose or I eat them slowly over a long period. Many times I can take them, come up for 45-60 minutes, peak for an hour or less..then come down for another hour or 2.

I also dont find that with oral harmine smoked DMT lasts longer than with sublingual. It is about the same in my experience. Sublingual harmine itself lasts for an hour or 2 so I dont see why the DMT should be inhibited for and less time than with oral.