Green coffee bean (which we’ll talk about later) that has solid human clinical studies backing it up. However, the research was only on a green coffee bean sourced from a specific region and extracted in a special way.
What too many supplement companies do is find a cheap source for the ingredient (China, for example) and don’t use the proper extraction method. The real active ingredient is then either nonexistent or in such small quantities as to be worthless.
They do this to save money…. Lots of money! As cheaper sources can often be found for less than 1/10 the price of the real thing…
Finally, (also to cut costs) even if they do happen to include the right ingredient – they rarely, if ever, include the same amount of the ingredient used in the study to get the claimed result. They usually hide this in a “proprietary” formula… or just assume that most consumers won’t have access to the research. Just be careful in whatever you are trying to do to lose weight.
The reason they do this is because ingredients that work are not cheap when delivered at the right dose.