One solution I'm going to try is the Medical Letter Drug interactions software for windows (cost $98 for 2 updates a year). According to the web site, it will allow you to store patient info, brief notes,and has the all important add one drug feature so you can see if the new med interacts with the current meds (without retyping everything). Unfortunately it isn't available until 2009, so I'll limp along with Epocrates for now. Thanks for the blog reference.
