HGH Fragment (HGH Frag 176-191) is a peptide hormone of the Growth Hormone (GH) class. Specifically, HGH Frag 176-191 is as its name implies a fragment of the GH hormone, a piece or part of the GH hormone. Human Growth Hormone (HGH), the tail end of the hormone is cut off and what’s removed is HGH Frag 176-191. This is the part of HGH that represents its fat burning power. This will be the primary and perhaps only purpose of HGH Frag 176-191, for use in fat loss and dieting.