Dr. JK said:
It all depends how suppressed your testes are.
If you have been ON for a long time and supressed your HPTA severely, then you need a few good shots of HCG (3000-5000IU's/shot)
If you are not suppressed that much than 1500-2500IU's 2-3X should be good.
In all cases I run 20mg Nolvadex & 25mg of Proviron before, during and after the shots to prevent gyno, and/or estrogen elevation.
The thing about frequent small doses of HCG like 500-1000IU's is that you might be suppressing your HPTA, and not giving it enough time to bounce back. This happened to me and that is why I only use HCG for a quick jump start (1-3 shots) and then continue with Clomid.
The reason they recommend a 4-5 day span between shots is because the HCG induces elevated testosterone 2X. 1st one after 2hrs from the shot and 2nd one 48-96hrs from the original shot. Too frequent shots will confuse the body in bouncing back from the spike and literally suppress the HPTA from recovering.
Peace
Dr. JK