I actually think that you will benefit from the “boost” you’re hoping for a lot longer than you think due to us not naturally producing our own GH less and less as we age, so 2iu may not seem like a bunch, but it will most likely be a good level for quite a bit of time.
I have yet to try it again after the debacle I had with it a few years ago. I experienced all kinds of arthritis like sides in my hands and whatnot on just 3-4iu’s per day and gave up on it.