I have been microdosing (300mg enhanced root bark) for eight days. I find it to be quite remarkable.  Clearly mood lightening, mildly stimulating, emotionally grounding.  I am sure it is not placebo.  I will try to remain  aware as I understand that it will build up in my system due to being fat soluble.  I also believe that it may potentiate other substances taken while using Iboga.  Far from an expert but this has been my experience thus far.