What is your difference between DOC and DOI? What I understood, is that an average dose od DOI is 2.5mg and an average dose on DOC is 4mg. I have taken DOI several times, and I felt tolerance, I can take 10mg and still have good control. But what I noticed, is that I imagine a lot of having good control, i.e. I get subconsciously stupid. I've taken DOC two times, and it was 5mg at both times. The DOC hit me a lot harder and gave me lot more visuals. Snorting DOI had less effect than eating it. These DOx compunds seem to last 10-14h for me. I've tested lot of RC and more than a hundred times, but never had the experiences similar to erowid och p/tihkal.