After looking into it, I'm amazed at what long term studies of clomiphene administration have shown. Isolated clomid administration is capable of much more than I ever imagined. Take for instance this study in which five healthy young adult men aged 26 to 33 were given 50 mg of clomiphene citrate twice a day for 8 weeks. The whole study focused on how the older men were relatively non-responsive compared to the younger men, yet the data on the young healthy men is incredible in and of itself. I'm surprised the researchers didn't even raise an eyebrow at this.
By week 8 of CC administration, the total testosterone level (Fig 2A) achieved in the young adult group was 48.2± 1.4 nmol/L (a 268% increase above baseline level). The young adult men reached a maximal nSHBG-T level (free testosterone level) (Fig 2B) of 20.6 ± 3.2 nmol/L (a 1,410% increase) after 8 weeks of CC administration. The increase in free testosterone is huge. And the beauty of it is that this is all endogenous production, due to increases in LH and FSH, which were also measured and graphed in the full study.
Full study: http://www.andrologyjournal.org/cgi/reprint/12/4/258