Anxiety
For those who are prone to anxiety, I felt odd and anxious a few hours after having 3 g of DAA. It was bad enough that I will not be taking it again any time soon. I also experienced a mild headache, which I assume was due to the DAA because I rarely get headaches and, if I do, it's usually due to neck pain (which I didn't have).
I took it on an empty stomach. I found the reaction strange given there is DAA in the body and given also there is aspartic acid in whey, which I have every day. However, I can't seem to find how much D aspartic acid (as opposed to the L form) is in whey.
Thanks to the poster who said the issue might be the threshold amount that is safe. Sounds spot on. Even water can be toxic if you have a very large amount in a short time (due to hyponatremia).
I've ordered Tongkat Ali. Now I'm afraid to use that. Anyone with anxiety on Tongkat Ali / Longjack? I'll start with a low dose this time.
From my experience, I'd say that if you're prone to anxiety and you're going to use DAA, definitely start with a low dose, take it cautiously and keep notice of your anxiety levels. Of course, worrying about worrying isn't very helpful, but this is about all you can do, really.