Shulgin's TiHKAL synthesis #4 DIPT.TRYPTAMINE, N,N-DIISOPROPYL.
DOSAGE : 25 - 100 mg, orally
DURATION : 6 - 8 hrs
COMMENTARY: Most psychedelic drugs affect, primarily, the visual sense, but here is one that shows its effects primarily in the auditory system. And it
screws it up in a most unlinear manner, in that there in not just a simple decrease in pitch...Actual proportionality is lost, so there is complete harmonic distortion.

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