And if it were dangerous, it wouldnt be aproved.

That's just hilarious. The FDA has approved literally hundreds of things that prove to be quite toxic, and doesn't even bother to pull most of them off the market.

make sure to get enough lab created vitamin B12

Our bodies create b12, probiotic foods (kraut, pickles, kombucha, etc) contain b12, and eating produce from soil that hasn't been Monsanto'd to death gives b12 as well. The only way to not get enough B12 is to eat only dead food and not keep healthy gut flora.

I've been vegan for over 4 years now, and have never taken any supplements that were not 100% raw and totally plant-sourced (like Garden of Life)