I've been on injectable IGF-1R3 for only three days now, and for about 8-10 hours after each injection, I am so fucking achy and sore, it's amazing. But it's a good feeling because its combined with an incredible pump that never seems to subside. And I do seem to have more effect on the injected muscle than in other muscles--that is, some localized hyperplasia. As a result, I'm changing from daily 100 mcg injections to two 50 mcg/ed injections, done bilaterally in both bis, both delts, both quads, etc. On workout days, I'm doing it immediately after the workout; non-workout days, first thing in the morning. In short, this **** is amazing for me--I feel permanently pumped and big--much more so than even on 1g of testosterone/week. Stay tuned.