A record of current medications as well as prior medication history is useful if not vital information to an individual. Such information needs to be easily accessible, yet adequately protected. MyMedicationList is a prototype application developed at the National Library of Medicine that helps users manage their medication lists and make the records readily available when needed. This personal medication list can be printed out and serve as a reminder to the individual for taking medications, or as reference information to support continuity of care at doctors offices or hospitals. This paper presents the design and implementation of MyMedicationList. As the personal medication record is considered a specialized Personal Health Record (PHR), the experience may be applied to general PHR design and implementation. An early version of MyMedicationList is available at http://mml.nlm.nih.gov/.