
Originally Posted by
einstein1905
There are IGF-1 receprors all over the place. You are, I'm assuming, taking IGF-1 to increase lean mass.You have a huge concentration of IGF receptors on your intestinal epithelia. If you go subQ, the IGF becomes systemic via your vascular system and will bind to receptors all over and cause growth (oversimplified). Lots will bind to IGF receptors on muscle, which is good. Some will bind to intestinal receptors or receptors on your spleen, which isn't what you're looking for. Going IM just focuses things and reduces possible adverse effects. This doesn't mean you'll get growth gut if you shoot subQ, but at high doses and over time, it will increase your chances.