Re: IGF 2 vs IGF1 duration of cycle
AJ....have you used IGF-1 before but not IGF-2? I've seen a few graphs that show IGF-2 kicking in much faster than IGF-1 and then maintaining levels over a 48 hr period or so. IGF-1 is a more gradual increase. So, some people believe that IGF-2 is much more potent, when in reality it is all a matter or timing.
The best way I've seen people utilize these two is a combo run at the same time. This will generally yield better results than cycling back from one to the other. IMO, an igf-1/2 cycle can be supplemented in the off time with GH, GRF (1-29), and GHRP-2. The main thing that people do wrong with IGF-2 is they inject it POST workout. This is something that needs to be pinned 30 minutes to an hour preworkout to be utilized correctly. Levels spike for your workout and pumps become insane. Then postworkout the levels are likely not spiking anymore, thus not delaying the realease of your natural MGF and GH that is necessary for the healing process. IGF-1 can be used upon waking and then again in the early afternoon (depending on when you get to the gym).
Start with 25 mcg of each per day and work up to 100mcg or more if you feel the need. Also, consuming carbs PostWO (similar to slin protocol) is also suggested when combining these 2 growth factors. Maltodextrin intake is key to maintaining blood glucose levels and will actually increase lipolysis over the span of several weeks. You could probably do a 1 month on, 1 month off cycle with good results and not accrue many side effects. Any length of time longer than that and you run the risk of growing exoskeletal benign tissue or the possibility of inner organ growth. Skin thickness could also become an issue if continuing that combo for several months or a year at a time. Remember, the skin is an organ as well.
Hope that helps. I'm just pulling all this from my knowledge over the years. If you'd like references shoot me a PM and I'll get together what I can in a day or two.