Interesting. At four months, with those kind of dosages, you do not notice any changes.
I will say that hgh effects are very mild compared to, say, injecting testosterone, or tren, or popping an anadrol capsule.
What I did notice the first time I tried it was that I was able to gain weight and get leaner at the same time on only 3 iu daily. I had long ago ceased to be able to do that on just some test/tren or test + anything else. This may, however, be a function of my age. I was late 40s the first time I tried hgh.
Younger guys may not notice as much due to higher levels naturally.
So, for me, it definitely does something, and the effects are noticeable long before 4 months, but it is much more subtle than might be expected from steroids.