http://www.acaiberry.us.com/ Not all acai berry products are created equally. Some just are not potent enough to make them effective. This is why we've taken the time to give each of the leading acai berry products an in-depth review see which acai berry diets work, and which don't. Acai can be one of the healthiest and effective weight loss agents in the world, but it will not work if you are not getting the purity needed.