How Safe is to Use Supplements?

I wonder how dangerous it is to use herbal v iagra. I was reading this morning about Lamar Odom, who was apparently taking that stuff before he was found unconscious. I have not really heard much about that happening before, but there is pretty much no telling what is in any of the stuff that you may find. I looked around on the internet and I found this stuff called herbal v and I tried to figure out what it was or what it was made out of. Of course this is not like food where you are required by law to tell people what they are ingesting. They have to tell you if it has sugar or fat and protein. You have to disclose how many calories it contains and all sorts of other nutrition related facts. This is not the case when it comes to supplements in fact. They are not regulated by the FDA or any other respected entity. I was wondering if there was any place that did real scientific testing on supplements and so called holistic remedies. I know a lot of people who will take anything which they call holistic. They think that it means that it is safe and I suppose that in theory there is a basis for you to believe this, but it is not something that I would want to wager my life or wager my health upon. There really is not much reason to have any faith in the claims that any of these people make and there is no real way for you to determine the truth for your own self. It is just a very complicated problem for which there is not a simple answer. It is just difficult to know where you can anything which is going to resemble the truth.