Most people over 65 take many prescription and nonprescription medicines. Because the body is changing and more medicines are taken, many older adults experience harmful reactions to the medicines they take. This booklet, written in both English and Spanish (on facing pages), was developed to help older adults learn more about medicines, recognize problems associated with taking medicines, and learn to work with health professionals to ensure that medicines are working properly. Several topics are covered under the following headings: (1) "Medicines and Their Effects" (discusses medicines and their interactions, medicine-medicine interaction, medicine-food interaction, medicine-alcohol interaction, and side effects); (2) "When You See Your Health Professional" (describes what doctors, pharmacists, and nurses must know about a patient, such as medical history, eating habits, or any problems associated with swallowing tablets, following medicine schedules, or telling medicines apart); (3) "Ask Your Health Professional" (suggests appropriate questions to ask pertaining to when and how to take medicines); (4) "Tips for the Consumer" (discusses prescription and over-the-counter medicines, how to save money, and how pharmacists can help); and (5) "Take Me with You" provides a detachable summary list of helpful tips and a blank chart for keeping track of medicines. (LL)