You do know that nutritional supplements arent assessed by the FDA and have no requirements of being safe OR effective, right? And you also know that just because somehting is "natural" doesnt mean that it's safe and gentle, right? I can name you dozens of the worst toxins and poisions known to man that are "natural" - synthetic drugs however are manufactured for a certain purpose, you can be confident of their purity (who knows what extra stuff is in these suppliments - they dont HAVE to tell you!) and have all been tested exhaustively by the FDA in the US anyway.

Just FYI