At first,when I read this post I thought you had been hijacked again...because you said"be carefull taking herbal remedies..."!
The fact that the FDA have not approved something is of small significance to me.If it was up to the FDA, we would not
be able to take any vitamin/mineral supplements at all.
As for herbal remedies that are found to be effective for treatment for example St.Johns Wort ,they are often discredited & banned because the wide spread use of such herbs is not profitable for pharmaceutical companies.
I have heard alot of bad press about that particular herb,
St Johns Wort.I have actually heard many,many stories of people who have taken their own lives while taking prescribed anti-depressants.But it still dosn't make front page news and it should.It is like an epidemic.

The natural stuff is powerful and should be treated with respect and doses and circumstances are so different for each individual so it really is a matter of finding what works for you.With the help of a few professionals.
That's one of the differences between mainstream medicine and "alternative"medicine, one pill fits all with mainstream and how could that be right when we are all so different ,having seperate,unique experiences?