In order to get the recommended supplements you may need, you must register (ONLY ONCE) at www.nut-dyn.com (Nutrition Dynamics web site), as "Patients" under account number 100746. Then you can create a user ID and password, after which you can simply log in to order products easily. Nutrition Dynamics distributes ONLY to established doctors/health professionals, so this step is necessary to allow the public direct access to 1500 profressional-quality products. If you experience any problem with this process, they can call Nutrition Dynamics and order by phone - 800-444-9998. You will need the account number here as well (100746).