D.B.
There's no miracle ingredient, and no research to support it. There are so many sources for this anyway, so how do we check clinical data as well as manufacturing standards? Where is the patent? Are there near-pharmaceutical grade conditions for manufacture (higher than what's required in the food industry)? What about additives? What about the standard percentage of 15-30% absorption of anything in pill form (vitamins, prescriptions, anything else)? I'd question this.
There is considerable data on a natural ingredient raising the level of hormones that make a person feel full and addressing free fatty acids. There is plenty of info on complete nutrition keeping the body from going into "starvation mode" and slowing the metabolism (the problem with most diets) and there are safe products for doing this without stimulating the central nervous system.
I work in nutritional epigenetics, which is heralded as THE science for the century, and I don't know of any scientists anywhere who are promoting garcinia cambogia unless they have a profit motive. I remain open to science but not to advertising claims if they aren't backed up by clinical data.