That article was pretty rough, and not entirely accurate for our purposes. It is dealing with the herb Yohimbe as a whole, not the supplement Yohimbine HCL that many of us use. There is a difference in the two. Pretty one sided article if you ask me, but they are everywhere.
As far as dosing, personally I will only be taking 5g per day. 2.5 (one pill) 2x per day. Of course it is not a bad idea to take 1/2 dose, just one pill, to assess your tolerance.
as you can see, the 5g daily comes nowhere near the oh so feared 30-40g in the article...of which again was yohimbe not yohimbine hcl.
just my thoughts for ya.