Thanks! I'm glad to have an additional reference for this graph, as I have been unable to open it up on the brittanica.com site, even after saving it as a favorite.  Only thing though, doesn't this graph look slightly different from the other one.....not as many distinct peaks and valleys?  After the 8AM peak, the declining curve looks much smoother and more gradual.  From the viewpoint of being on a long-acting med, I think I like it better!  Is it just my eyes?