Found this...
"The most significant disparity is in the fact that HCG - human chorionic gonadotropin - mimics lh - leutenizing hormone - (luetinized hormone). It gives the body a false signal that lh - leutenizing hormone - is present and everything else responds accordingly. HMG actually elevates natural lh - leutenizing hormone - . Now to some, there***8217;s little difference, but it***8217;s always better when the body reacts in the most natural manner. There***8217;s also less of a chance of building up a tolerance when this occurs. And in the case of HCG - human chorionic gonadotropin - , tolerance is developed pretty quickly. You see, Mother Nature is pretty sharp. You can fool her a few times but after a while, she catches on and refuses to cooperate. That***8217;s why excessive HCG - human chorionic gonadotropin - use is not recommend. Use too much, too often, and it won***8217;t work at all.
Exactly how much LESS suppressive HMG is appears to still remain speculative. But it***8217;s a good guess that it***8217;s less so.
There***8217;s another, still empirical, opinion that HMG causes less of an estrogen spike. The use of HMG for bodybuilding purposes is so new there***8217;s no way of proving this one-way or the other. Yet. But again, it stands to reason this is so.
One absolute difference between the two compounds is the fact that HMG raises FSH - follicle stimulating hormone - (Follicle Stimulating Hormone) and HCG - human chorionic gonadotropin - does not. Again, this is due to the fact that HCG - human chorionic gonadotropin - works synthetically and HMG stimulates the entire feedback loop. This is especially appealing since an increase in FSH - follicle stimulating hormone - means higher sperm count and ejaculate volume. "
Could be a very interesting alternative.