Besides for tasting extremely k@k, and i do mean EXTREMELY. Last time i heard it increases estrogen levels, so i'll rather stay clear.
Quite honestly the k@k taste alone is enough for me to not even take it for free, it really is horrible, there is not one single thing you can mix it with to mask that taste. I can't emphasize enough on how bad this tastes, BCAA tastes good compared to this, If you do manage to keep it down, your stomach is not going to be very happy.
I bought 2kg of this cr@p 2 years back, I probably had 3 shakes and chucked the rest. Rather buy unflavored concentrate, it a bit more expensive but much better IMO.
*Big edit, It was PEA protein, not SOY Protein, my bad!!
But its definitely Soy protein that i heard increases estrogen.