Phew...it was spelled correctly... (if you haven't been around this forum for a while, that might not make much sense to you).
Well, there is data that it should increase GnRH which in turn would (hypothetically, at least) would incite additional production of LH and FSH and finally testosterone.
There are issues getting enough of an oral bioavailability offer adequate trickle down effect, however. I have used upwards of 3 grams with minimal impact on testosterone levels...5 grams was more productive BUT not impressive and not cost-efficient.
As a result, if testosterone increases were what are sought, I wouldn't do it as a stand-alone. That doesn't eliminate the many other positives associated with it's use NOR does it eliminate the potential for synergy with other agents or as a tag-along in instances where you might get HPGA shutdown (i.e. - alongside a hormonal agent/modifier).