[Archaea]

The problem with herbs is the lack of controlled studies. Herbal salespeople make a bunch of unverifiable claims.

And from what I know, often the herbs are too dilute to produce the properties which many proponents make.

Conversely, before we had the titration and concentration techniques, herbs were our first medicines, so to opine that no herbs are of benefit would be false.

Usually, if there's high profit without verification, one should worry. In those cases, what I've usually found is benign substances that work no benefits, and merely loosen cash from the pockets of the possessor.