I was turned on to Choline many years ago, has always helped me with relaxation and concentration. My husband more recently started taking pramiracetam,Pramiracetam Bulk Powder 25 Gramsto help him focus on a big project for work. Turns out when you combine it with choline the effects are increased significantly. I've been more alert and "switched on" during the day, and able to relax more easily I think, in social situations. A good one two punch!