Note that the following excerpt from the article:
"I believe that the problem is narrow, that the well-established and reputable brands deserve their reputations," said Michael McGuffin, president of the American Herbal Products Association.
A warning sign is that this is a spokesperson for a herbal products conglomerate, that kind of indicates a big conflict of interest in making the statement, but then it's also a pretty good general guide to life in general. Remember that even the well-established brands have been caught out, but in general, reputations are deserved, one way or the other.
The answer is as always - if it seems too good to be true, then it is too good to be true. All throughout my blog I've urged people to take personal responsibility, and keep the bastards honest. It's as true with vitamins and supplements - ask yourself why you're taking them, then ask yourself if they're really what your body needs, and if you really trust the manufacturer / supplier not to cut corners to snip themselves another percent of profit?
Your body is pretty capable of getting its own vitamins from your daily diet - do you really need to spend that money on a product that may or may not be harmful to you without providing any benefit, or would you be better served spending it on some locally grown fresh fruit?