perhaps he extracted it himself? we cannot presume to know his sources
even if not, there are a variety of methods of purification (re-x et al)

the synergy he is suggesting seems to be an aid in mind-expanding mystical properties.

i don't see how a molecule itself can be disrespectful.

only the behavior with which it is used.

I was offered a pipe of freebase cocaine on the weekend at a festival while on LSD.. despite the negative stigma I generally hold towards these addictive substances I really enjoyed it.. it did not make the experience any less spiritual, and I have not been left feeling shitty or wanting more since. in fact it was one of the most interesting trips I've had in a while and I did feel a profoundly different perspective on the LSD realms. Whilst I agree it might not to be the best of ideas to combine the two, I think its kind of mean how people here are shunning anyone who dares try it.. it is possible to use some of these substances responsibly when the time is right. I dont regret my experience at all..

Personally I don't think I need to combine anything else with dmt.. it is more than enough for me and I much prefer being sober for it..though sometimes in particular circumstances I may.. I have launched on MDMA and LSD for example. Both experiences beautiful and I did not feel were a disrespect to the molecule.. I think it depends on your attitude using the other substances to begin with.

this.. i think it is disrespectful in itself to proclaim another persons attitude disrespectful for their choice of substance