I really want to get my DNA tested, because I'm almost certain that I have the AA variant. rs4680 is also known as the worrier/warrior gene; those with the AA variant tend to handle stress poorly, have high anxiety, and are neurotic. Seeing as how I fall apart with the slightest bit of stress in my life and score 100% on every neuroticism test I take, I would be very surprised if I didn't have this variant of the gene.
Also, my psychiatrist prescribed me Modafinil at 100 mg. I felt nothing and fell asleep shortly after taking it. He bumped it up to 200 mg -- still felt nothing. At 400 mg I just decided to quit taking it, because it literally had no effect whatsoever. Bit of a bummer, because I had high hopes for its effect on my ability to stay awake and focus. (Adderall, on the other hand, does produce a noticeable difference.)
Also, my psychiatrist prescribed me Modafinil at 100 mg. I felt nothing and fell asleep shortly after taking it. He bumped it up to 200 mg -- still felt nothing. At 400 mg I just decided to quit taking it, because it literally had no effect whatsoever. Bit of a bummer, because I had high hopes for its effect on my ability to stay awake and focus. (Adderall, on the other hand, does produce a noticeable difference.)