What Dan said. Oral has by far the lowest bioavailability/absorption. However, it has the longest duration and a smoother/slower onset. It depends what you want from your speed. I know taking something alkaline, along with oral speed is supposed to stop your stomach acid destroying as much, which makes it stronger. I'm not too sure that it works with other routes, though. You would have to make your blood more alkaline, which sounds difficult/dangerous.
As for trippy speed, I've had stuff that's not been very clear headed, and almost makes me feel a bit out of it. That's usually been street stuff, though. The uncut stuff definitely isn't trippy, unless it's three days into a binge, or psychosis is kicking in.
As for trippy speed, I've had stuff that's not been very clear headed, and almost makes me feel a bit out of it. That's usually been street stuff, though. The uncut stuff definitely isn't trippy, unless it's three days into a binge, or psychosis is kicking in.

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