Dubman Memory, focus. Great for people with working memory challenges or ADHD but also probably for everyone, if you ask me. It basically builds stronger connections in the various parts of the brain and has had good trials to indicate it protects people from developing alzheimers and dementia based on successful tests in mice.
This was some years ago and the trials should have advanced now. Be interesting to see if it helps somehow reverse these as its about time we found positive treatment for it.