Like iron game said it is very like fake or just animal insulin which gives you the "pump feeling" real igf is very expensive and very hard to source (about £250-300) but the correct way to take is about 4 hours post workout in muscles trained as real igf interferes with mgf which is product immediately after training and you don't want this.

First off most is fake, or is not biologically active due to poor production methods, storage or somethijg. But I guess the most fun way to run it is pre workout but in my experience I've used it a few times and from what ive read the best results come from injecting post workout. Huge surge of igf-1 activating receptors right when you get done lifting and are now trying to grow and recover. If you get the real stuff say you train biceps,25mcg into each will be plenty. But you most likely will not find real igf-1. And if you do it will be way underdosed. So I'll dose the shit high and still get very little from it. I've given up on igf-1 from research chem companies.

When I ran it I did 150mcg on both delts, 50mcg inner biceps and 50mcg outer bicep, 50mcg biggest head of triceps. 150mcg each quad. This is what worked for me. I did it immediate pre workout. But u wud only do the body part you are working that day not all together. For example when doing shoulders u wud pin delts. When doing arms u wud do bi and tri... Etc