I just worry about supplements in general. I've "seen how the sausage is made" and these supplement companies run the spectrum for great to terrible.

When I did supplement testing, sometimes there would be no compound contained within the sample!!! These companies will buy cheap, adulterated compounds from China and try to make a supplement out of it....then they are shocked and angry that there is nothing in their newly formulated product. And some of these companies are so fantastic, if they offered me a job that I'd jump at the chance to work there.

It's really hard to vet some of this stuff out to find the quality products without tearing a large hole in your wallet.