From what I know Coca leaf is 0.3-0.7 %% strong. I have teabags that <>1g and usually 2 bags to a mug = a coffee (according to me mate but I aint sure due to tol).
So that's not even 2mg ORAL maybe it's all the other alkolds? Mind you it aint meant to be strong just a bit of a caffine mood boost
A number of years ago I took ~800mg of some very high quality cocaine orally, and obviously, at this dose, it was quite effective. To me, it seemed equivalent to maybe 150mg IV, but this is a very rough estimate as these routes cannot be accurately compared.