Why IV over IM? Tripping with an IV rigged up to your vein for the duration of the experience sounds like bad setting in my opinion, especially if the magic makes you want to get up and move around. Also I don't think the harmalas would need to be injected for this desired experiment. Someone who knows chemistry better than me could probably chime in, but in my general understanding, you should never inject something that you extracted from plant matter as opposed to something that was synthesized.
From what I've read, DMT administered via IM comes with a longer duration, smoother comeup, and more articulate experience. Shulgin provides his wonderfully objective comments in TiHKAL:
(with 20 mg, intramuscularly) “I began to see patterns on the wall that were continuously moving. They were transparent, and were not colored. After a short period these patterns became the heads of animals, a fox, a snake, a dragon. Then kaleidoscopic images appeared to me in my inner eye, fantastically beautiful and colored.”
(with 30 mg, intramuscularly) “There was eye dilation and, subjectively, some perception disturbances.”
(with 50 mg, intramuscularly) “I feel strange, everything is blurry. I want my mother, I am afraid of fainting, I can’t breathe.”
(with 60 mg, intramuscularly) “I don’t like this feeling—I am not myself. I saw such strange dreams a while ago. Strange creatures, dwarfs or something; they were black and moved about. Now I feel as if I am not alive. My left hand is numb. As if my heart would not beat, as if I had no body, no nothing. All I feel are my left hand and stomach. I don’t like to be without thoughts.”
(with 75 mg, intramuscularly) "The third or fourth minute after the injection vegetative symptoms appeared, such as tingling sensation, trembling, slight nausea, mydriasis, elevation of the blood pressure and increase of the pulse rate. At the same time, eidetic phenomena, optical illusions, pseudohallucinations, and later real hallucinations, appeared. The hallucinations consisted of moving, brilliantly colored oriental motifs, and later I saw wonderful scenes altering very rapidly. The faces of people seemed to be masks. My emotional state was elevated sometimes up to euphoria. At the highest point I had compulsive athetoid movements in my left hand. My consciousness was completely filled by hallucinations, and my attention was firmly bound to them; therefore I could not give an account of the events happening to me. After 3/4 to 1 hour the symptoms disappeared, and I was able to describe what had happened.
(with 80 mg, intramuscularly) “My perceptual distortions were visual in nature and with my eyes closed I could see colored patterns, primarily geometrical patterns moving very fast, having sometimes very deep emotional content and connotation. My blood pressure went up and my pupils were dilated.”
and then IV:
(with 15 mg, intravenously) “An almost instantaneous rush began in the head and I was quickly scattered. Rapidly moving and intensely colored visuals were there, and I got into some complex scenes. There were few sounds, and those that were there were not of anyone talking. I was able to continue to think clearly.”
(with 30 mg, intravenously) “I was hit harder that I had ever been when smoking the stuff. The onset was similar, but the euphoria was less.”
Book II of TiHKAL: The Continuation. Alexander & Ann Shulgin #6: DMT
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