Actually none of them work. There has been no study that proves they work, and there is no reason to believe they do. The sites that sell them on the internet (probably the ones that say only theirs work) are scams.
They are high in anti-oxidants, but not as high as blueberries. They really aren’t special, and definetly not worth the price. They don’t make you loose weight, nor any of the other supposed magical properties.



