FightLow: I agree in general with what you are saying, but, again, aminos are much more powerful than we think generally. I can almost guarantee you that taking this will change ten other chemical ratios that we have little understanding over. Think how powerful Leucine is - just a couple of grams. Think how powerful Lysine is - again, just a couple of grams. I'm not saying it's bad, but I don't think we should be completely casual and think it's the equivalent of taking a chewable calcium...
Now, that said, supposedly the D form is not really utilized. But, if that's true, then why does it raise testosterone? So something isn't adding up and I haven't been able to find the answers to those kind of questions.
D-Aspartic Acid apparently works by increasing the STAR enzyme in order to boost testosterone. However, what is not commonly known is that it increase aromatization according to some studies.
If that's true, then that's potentially quite ugly.
Most importantly, think how many things this supposedly inert form of aspartic acid is changing. This is just the beginning: over the years they will find other things that D-Aspartic Acid changes as well and I doubt that it's all going to be good.
Here are several studies that discuss the aromatization issue:http://www.reproduction-online.org/content/121/5/803.shorthttp://joe.endocrinology-journals.org/content/182/2/365.short