I would be hesitant to give AQ1 an all clear for oral dosing as a simple tea. It's worth noting in that Festi and Samorini publication that an extract of the grass was used and not a simple tea. Based upon the various analyses we've performed, I get the impression it's probably relatively safe, but we don't really know for sure. If you choose to experiment with the tea start very low and work up very slowly, stopping immediately at any sign of disconcerting effects... and of course be sure to report your results.