The tannin removal of MHRB vodka extract proceeds exactly like in the Robert Murray Smith video. The ABV in the range of vodka was found by Chinese researchers to be optimal for tannin precipitation (which is rather fortunate, really!) A brief test, performed by washing the filtered-off tannins with 70% ABV grain spirit revealed that the higher percentage alcohol causes coloured material to redissolve from the precipitate.

A sample of the tannin-free tincture was tested as an adjunct to Syrian rue tea and a smooth effect was noted, albeit possibly somewhat delayed in onset compared to using purified DMT. This may have been due to the participant falling asleep and then waking up again once the effects had commenced. As a word of caution, the waking into the jurema visions seemed to have a pre-convulsive edge to it. In that respect it may be wise if this method was reserved for those who have some considerable experience of meditation and conscious control of the autonomic nervous system. Then again, with a sample size of one this isn't at all cut-and-dusted.