If one was to take injectable IGF-1 Lr3 at 20mcg per day it would take a long cycle to see any benefits beyond mild GDA like effects. Assuming, and its a rather large assumption, that this product delivers the IGF-1 intact to one's bloodstream the half-life will be measured in minutes since this is not Lr3. Now regular IGF-1 can be effective but I doubt anyone would expect much from 20mcg/day. If this does make it into the bloodstream a larger dose and a long cycle would be needed IMO. Not too many people are going to stick it out for three or more months at 100 a month or more.
Personally I would love to try this stuff at a high dose and for three months but am not willing to take the financial risk at this time.