Read individual product descriptions for a more comprehensive analysis of the respective compounds, but this particular combination works synergistically to add substantial amounts of bodyweight.
MK-677 increases natural IGF-1 production, which is an incredibly potent muscle builder. As a ghrelin mimetic it also increases natural growth hormone production significantly. Expect a boost to your appetite and metabolism, which pairs well with the strength and muscle gain you can achieve with the androgenic LGD-4033. The products are hydrophilic, so expect a substantial increase in fullness, that may come with water retention.