Yeah most of them are hype, you'll find some of the ones that have been out on the market for over 4 years or so are a little more dependable. There's also trial and error, it just helps if you have a few different people to talk to about them. Being that our chemistry is a little different from person to person, some sups will be inert for individuals with a high metabolism, your body just passes them on.
My wife is more into eastern medicine, herbs, those kinds of things. Can't use her as an example for sups.