I don't have ADD, but I use DMAE almost daily. I have anxiety and some depression, and the amino helps me to concentrate, plus helps my moods. I've read research, which showed it does help in the long run with moods, and possibly preventing Alzheimer's.
I wanted to mention that the DMAE is an amino alcohol, in case anyone has any trouble with migraines. It does tend to give me a little headache occasionally.
Also, if anyone has bipolar disorder, it is not recommended, as it can cause manic episodes. My husband has bipolar symptoms, and he likes the DMAE, but it really makes him manic.
I really love it, too. It's also put into expensive face creams. I open a few capsules and dissolve them in hot water, and add them to mine.
Take care, and good luck with your school,