There is no proof that the ingredient is in fact dangerous. I believe they took the product off the market because the same ingredient from USPLabs OxyElite Pro ran into a ****storm because of fake supplements on Hawaii, and simpy because the FDA hates USPLabs after the case with DMAA and Jack3D.
The european version (and Australian i believe?) of Jack3D Advanced is still being produced and sold, and it also contains Aegeline. There is no outbreak from this. Enhanced is also sold several places in Europe and US and i've never heard about one single case of liver damage caused by this.