GNC Total Lean Advanced Metabolic Elite is an over the counter weight loss supplement made by the large American retailer, GNC. This company is known for the many ranges of vitamins, supplements, and other types of sports and other types of nutrition aids. This product is meant to work as a thermogenic enhancer that is a “fast-acting metabolism supercharger”, according to the product package.
Unfortunately, in terms of official sources of information, the only info that could be found about GNC Total Lean Advanced Metabolic Elite was the package, itself, as the product details were not available to view on the official webpage for the product on the GNC website at the time of the writing of this review. The package also claims that this product is “clinically proven to burn 6x more calories,” though it doesn’t say specifically what the basis for comparison is. It may be 6 times more than the individual’s usual rate of fat burning.
The official website does not provide a list of ingredients for this product, so third party websites were consulted in order to obtain that information. The ingredients that make up the formula at the time of this review include: niacin, the 6x Clinical Burn Blend (which includes mucuna pruriens seed extract, ginger root extract, boswellia serrata gum extract, Capsimax (capsaicin), cinnamon bark extract and piper longum fruit extract), the Botanical Rush Blend (which includes green coffee bean extract, rocket plant leaf extract and chicory root extract) and the Mind/Body Matrix (which includes reishi mushroom powder and cordyceps sinesis extract).
Upon searching through databases of medical journals, none of the ingredients within this product were found to have a significant body of evidence to suggest that they were directly linked to weight loss. In fact, there are some ingredients – such as green coffee bean extract – that do have some research, but that is quite conflicting in terms of its results. While some limited preliminary studies state that it is worthy of additional research, others say that its side effects negate any potential benefits that it has to offer. Moreover, the primary study that has been used to defend its use has since been found to have been conducted using flawed methods.
As a result of the lack of research and the fact that it is a part of a category in which there is a considerable amount of competition, providing many alternatives to dieters, it is difficult to recommend this product.